The association between referral by specialists in oral diagnosis on survival rates of patients with oral cancer: A retrospective cohort study.

BACKGROUND: To assess the influence of diagnosis and referral provided by specialists in oral diagnosis on disease-free survival and overall survival of patients with oral cancer. METHODS: A cohort of 282 patients with oral cancer treated at a regional cancer hospital from 1998 to 2016 was analyzed retrospectively. The referral register of the patients was analyzed and assigned to two groups: (1) those referred by oral diagnosis specialists (n = 129), or (2) those referred by nonspecialized professionals (n = 153). The cancer treatment evolution was assessed from the patients' records, and the outcome was registered concerning cancer recurrence and death. Sociodemographic and clinicopathological variables were explored as predictors of disease-free survival and overall survival. RESULTS: Group 1 exhibited lower T stages and a reduced incidence of regional and distant metastases. Surgery was performed in 75.2% of cases in Group 1, while in Group 2, the rate was 60.8%. Advanced T stages and regional metastases reduced the feasibility of surgery. Higher TNM stages and tumor recurrence were associated with decreased disease-free survival, while surgical intervention was a protective factor. Higher TNM stage had a negative impact on the overall survival. CONCLUSION: Specialized oral diagnosis did not directly impact disease-free survival and overall survival and did not influence the indication of surgery in oral cancer; however, it was associated with the diagnosis of early tumors and better prognosis.

A cross-sectional CBCT assessment of the relative position of one-piece titanium-zirconium mini-implants placed for mandibular overdentures using non-guided surgery.

OBJECTIVE: To assess the relative position of mini-implants to retain a mandibular overdenture, according to the surgical protocol, technical and anatomical factors. METHODS: Mandibular cone-beam computed tomography (CBCT) scans were analyzed for 73 patients who received four one-piece titanium-zirconium mini-implants. Drilling was performed using a 1.6 mm needle drill and a 2.2 mm Pilot Drill, according to the bone density with a surgical stent. Post-insertion CBCT images in DICOM format were analyzed using the E-Vol-DX software with BAR filters. Divergence angle between implants and between implants and the overdenture path of insertion was measured using CliniView 10.2.6 software. RESULTS: Divergence between implants ranged from 0° to 22.3° (mean = 4.2; SD = 3.7) in the lateral and from 0° to 26.2° (mean = 5.3; SD = 4.1) in the frontal projections (p < .001). Only 1 (0.2%) and 3 (0.7%) of the measurements were higher than 20° in the lateral and frontal views, respectively. The mean angulations between the implant and the path of insertion for the overdenture were 9.3° (SD = 7.5) and 4.0° (SD = 2.9) for the lateral and frontal views, respectively (p < .001). Regression analyses showed a significant association between the divergence of implants and the frontal view projection (p < .001), greater distance between the paired implants (p = .017), the flapped surgical protocol (p = .002), higher final insertion torque (p = .011), and deeper preparation with the needle drill (p < .001). CONCLUSIONS: The mini-implants were placed with low divergence angles and satisfactory parallelism. Factors including shorter distances between the implants, higher density bone, and a flapless surgical approach all contributed positively to improved parallelism of the mini-implants.

Mandibular overdenture with a single implant in the canine region (c-SIMO): a feasibility study.

OBJECTIVES: The aim of this multi-center pilot study was to assess the viability and feasibility of a novel treatment concept - the canine-positioned single implant mandibular overdenture (c-SIMO), with the single implant placed on the patient's preferred chewing side instead of the midline. MATERIALS AND METHODS: Participants received a single implant in the canine region of their preferred chewing side, based on an Asymmetry Index observed during mastication. The pre-existing mandibular denture was transformed into a c-SIMO on a spherical attachment. The primary outcome was oral health-related quality of life (OHRQoL), measured with GOHAI and OHIP-EDENT. Secondary outcomes included denture satisfaction index (DSI), chewing efficiency (CE), maximum bite force (MBF), implant survival and success, and prosthetic maintenance. Data analysis included descriptive statistics and bivariate comparison tests. RESULTS: Fifteen participants received the c-SIMO treatment (mean age: 69.9 ± 7.0). Implant success and survival rates were 100% at 1 year. Patient-reported outcome measures improved significantly compared to pre-treatment values (OHIP-EDENT: p = 0.001; DSI: p = 0.001; GOHAI: p = 0.002). Masticatory outcomes also improved significantly (CE: p = 0.001; overall MBF: p = 0.005). Post-implant, MBF was significantly higher in the ipsilateral side compared to the contralateral side at 2 weeks (p = 0.019) and 3 months (p = 0.015), but no longer at T3 (p = 0.730). Common prosthodontic events included denture base adjustments (n = 17) and matrix activation (n = 9). CONCLUSIONS: This pilot study concludes that c-SIMO is a promising treatment option, and a potential alternative to the single midline implant overdenture. CLINICAL RELEVANCE: The novel treatment concept of a canine-positioned single implant mandibular overdenture could be a viable treatment alternative to the midline positioning.

Reliability between the two-colour chewing gum and the gummy-jelly tests used for the assessment of masticatory performance.

OBJECTIVE: This study aimed to evaluate the reliability of two methods used to assess masticatory performance and attempt to correlate them to achieve interchangeability between the methods. METHODS: Twelve healthy dentate volunteers (men = 6, women = 6; mean age = 28.3 ± 4.1) with no known dental or medical pathologies were requested to participate in this study. Each participant completed three masticatory performance assessments, including two two-colour mixing-ability tests using chewing-gums (CG: gum#1 and gum#2) and the gummy-jelly (GJ) test. For each method, participants created five samples each (total = 15 measurements per participant, gum#1 = 5, gum#2 = 5, GJ = 5). For the gum#1 and gum#2 methods, the predetermined chewing cycles were fixed at 10, 15, 20, 25 and 30 cycles, and for the GJ method, the time duration was fixed at 10, 15, 20, 25 and 30 s. The parameter measures were submitted to Z-score transformation, and Bland-Altman plots were generated to graphically compare the differences between two techniques against their means. Additionally, mountain plot was used to assess the cumulative distribution of measurement error between the methods. RESULTS: A total of 180 measurements were recorded. There were significant correlations between the number of chewing cycles/chewing time and masticatory performance using the gum#1 (r = -.753; p < .001), gum#2 (r = -.838; p < .001) and GJ (r = .730). When all tests were considered together for each method, significant correlations were found (p < .001). A descriptive range of mean values aiming to produce reference value ranges for predictive purposes was achieved considering the interchangeably among the methods [CG = GJ (VoH-mg = dL): 10 cycle = 10 s: 0.329 = 110; 15 cycles = 15 s: 0.177 = 164; 20 cycles = 20 s: 0.130 = 205; 25 cycles = 25 s: 0.086 = 200; 30 cycles = 30 s: 0.077 = 267]. CONCLUSION: The strong correlations and high consistency between the two masticatory performance methods found in this study conclude that the two assessment methods are reliable and interchangeable. Further evaluations are warranted to arrive at a conversion formula for translation of the results between the two methods.

Changes in masticatory performance and bite force after treatment with mandibular overdentures retained by four titanium-zirconium mini implants: One-year randomised clinical trial.

OBJECTIVE: This prospective study is part of a randomised clinical trial and reports the changes in masticatory performance (MP) and bite force, and explores their influential factors, 1 year after the provision of mandibular overdentures retained by four titanium-zirconium mini implants. METHODS: Edentulous patients received conventional complete dentures, followed by placement of four mini implants (Straumann® Mini Implant System) in the anterior mandible and converting the conventional prosthesis into a mandibular overdenture. Treatment protocols were randomised using a 2×2 factorial design combining different surgical (flapped vs. flapless) and loading (immediate vs. delayed) protocols. MP was assessed using a two-colour mixing ability test and a colorimetric analysis to measure the level of colour mixing (Variance of Hue-VoH). Maximum voluntary bite force (MBF) was measured by a digital gnathodynamometer in the posterior and anterior regions. Sex, age, surgical and loading protocols and ridge morphology were tested as independent variables. MP and MBF tests were performed at baseline (pre-treatment) and the 3-, 6- and 12-month after implant loading. Descriptive statistics, independent t-test, and linear mixed-effect model (LMM) regression were used for data analysis. RESULTS: Seventy-four participants were assessed and 73 completed the 1-year follow-up. Statistically significant improvements in functional parameters were observed in all follow-up periods compared to baseline (p < .001). The flapless protocol was associated with higher improvement in MP at the 3-month follow-up (p = .004), while less resorbed ridges were associated with better MP (p = .038) and higher MBF (p < .001). CONCLUSION: The mandibular overdenture protocol using four titanium-zirconium mini implants was effective in improving MP and MBF of edentulous patients, compared to pre-treatment values. The findings also suggest that improvements in chewing function and bite force are impacted by clinical factors since better outcomes were observed for flapless surgeries and less resorbed edentulous ridges. CLINICAL TRIAL REGISTRATION: ClinicalTrials.Gov ID NCT04760457.

Prolonged use of old dentures: A qualitative study with Brazilian older adults.

OBJECTIVE: To explore older adults' perceptions, motivations and reasons for using and not replacing old and worn complete dentures over prolonged periods. MATERIALS AND METHODS: In-depth, semi-structured interviews were conducted with Brazilian edentulous older adults who were wearing complete dentures which were at least 20 years old. A purposive sampling method was used to recruit participants from an existing waiting list of those referred to a hospital clinic for new dentures. The interviews were video-recorded, transcribed verbatim and analysed using thematic analysis. RESULTS: Sixty-two individuals were assessed and nine were included in the study, aged from 61 to 77 years (mean = 65.4), with seven (77.8%) of them women. The reported time using their current dentures ranged from 22 to 45 years (mean = 28). Content analysis revealed three main themes: the perception of the current dentures' condition after prolonged use; reasons for the prolonged use and non-replacement; and unsuccessful attempts to replace the dentures. Overall, participants acknowledged the poor condition of their dentures and did recognise the need for replacement. Several factors had prompted them to delay or temporarily forego replacement, with financial constraints being the main barrier. Some reported failed attempts to replace the dentures in the past years or months; however, challenging adaptation to the new prostheses led to them reverting back to their old dentures as a fallback solution. CONCLUSION: Factors influencing prolonged denture use in older adults include a complex interplay of financial aspects, treatment awareness, access and personal factors. Dental professionals can play a pivotal role in promoting timely denture adjustment or replacement by addressing these factors through patient education and personalised care.

Single lateral implant for mandibular overdentures as a fallback solution or a viable treatment alternative: Four case reports.

This report of four clinical cases aims to illustrate the use of a lateral implant as a solution for implant overdentures in the mandible in different clinical situations. The first two cases describe the clinical situations of patients wearing two-implant mandibular overdentures until the failure of one of the implants, one due to implant loss and the other due to a fracture of an abutment screw, and how the conditions were managed. The third case illustrates the placement of a single implant to retain an overdenture, where a midline implant, as originally planned, was not feasible due to anatomic reasons. The final case describes the use of a lateral implant to support and retain a single-implant mandibular overdenture. The four cases demonstrate that a single lateral implant can be utilized as sole retention in cases of a failing contra-lateral implant and as an alternative to a single implant in the midline.

Reliability of a face scanner in measuring the vertical dimension of occlusion.

OBJECTIVE: This study evaluated the reliability of a face scanner in measuring the vertical dimension of occlusion (VDO). METHODS: Fully dentate volunteers (n = 20; mean-age = 30.0 ± 10.7 years) were recruited. Clinical facial measurements were obtained using a digital caliper and a face scanner (Obiscanner, Fifthingenium, Italy). The scans were imported into a mesh-processing software, and the distances were measured digitally. Measurements were obtained for each participant with the jaws positioned in maximal intercuspation (MI) and with increased vertical distances of 2, 4, and 6 mm. Vertical and horizontal measures were obtained using facial anatomical landmarks: Glabella (GL), Pronasale (PrN), Subnasale (SbN), inferior border of the right and left Alare, Labiale superius (Ls), right and left Cheilion (Ch), Soft Pogonion (SPg), right and left Tragus of the ear (Tr), for all selected vertical positions. Data analysis included intra-class correlation coefficient (ICC), pairwise comparison tests, Bland-Altman plots, and Passing-Bablok regression. RESULTS: 120 VDO measurements (clinical=60, digital=60) were recorded by two independent evaluators. Mean differences between digital and clinical measurements ranged from 0.054 ± 0.14 mm to 0.203 ± 0.13 mm. All parameters were strongly correlated (r > 0.93; p < 0.001). ICC estimates revealed excellent reliability, and the measuring procedure yielded the same results on repeated trials irrespective of the raters and measurement methods. Bland-Altman plots revealed a difference, between digital and clinical measurements, of 1.7 % for the vertical measurements. Regression analysis revealed no significant proportional difference between the two methods, so both can be used interchangeably. CONCLUSIONS: The findings of this study demonstrate that VDO can be measured accurately from face scans using 3D mesh-processing software and that even small changes in the VDO could be detected using the digital methods. CLINICAL SIGNIFICANCE: Findings provide evidence about the reliability of a digital method for jaw relation registrations and may be applied towards incorporating this method into clinical workflows for computer-aided-design/ computer-assisted-manufacturing (CAD-CAM) dentures.

A 1-Year Parallel-Group Randomized Clinical Trial Comparing the Effectiveness of a Mandibular Complete Denture vs an Early Loaded Single-Implant Overdenture.

PURPOSE: To assess the effectiveness of converting a conventional mandibular denture (CMD) into a single-implant mandibular overdenture (SIMO). MATERIALS AND METHODS: Edentulous patients received a new CMD and were randomly assigned to the CMD or SIMO group. For SIMO patients, a midline early-loaded implant was inserted and incorporated into the CMD after 3 weeks. Patient satisfaction and oral health-related quality of life were assessed at baseline and up to 1 year. Regression models were constructed using Generalized Estimating Equation (GEE). RESULTS: After 12 months, 32 patients were assessed (CMD: n = 17; SIMO: n = 15). Significant improvement was observed for the SIMO group compared to baseline measures. CONCLUSIONS: SIMO may be considered an effective alternative for patients unsatisfied with their CMDs.

Topographical and histological analysis of keratinized mucosal grafts removal techniques an ex-vivo study in porcine mandibles.

The aim of this study was to assess the surface and tissue quality of keratinized mucosa grafts (KMG) obtained using the conventional scalpel and mucotome techniques. This was an experimental in vitro/ex vivo study involving six porcine hemi-mandibles. Specimens were harvested using both the mucotome and conventional scalpel techniques, with randomization determining the choice of technique for tissue removal. The specimens were prepared following predefined laboratory protocols and subsequently subjected to optical microscopy for evaluating epithelial and connective tissue and scanning electron microscopy for topographical and 3D profilometry analysis. Tissues harvested using the mucotome exhibited a linear base and uniform thickness, along with the presence of submucosa and fibrous connective tissue, all of which are ideal for graft success. Differences in the surface characteristics of specimens obtained through the two techniques were observed during a comparative analysis of images obtained through both microscopy types. KMG obtained using the mucotome technique displayed greater uniformity and reduced undesirable cell presence compared to the scalpel technique, thereby enhancing the likelihood of success in soft tissue graft surgical procedures. This study provides valuable insights to oral healthcare professionals and may contribute to future research aimed at achieving more successful surgeries, shorter postoperative recovery times, reduced discomfort, and an overall more positive patient experience.

Mandibular overdenture retained by four one-piece titanium-zirconium mini implants: A 2-year follow-up on prosthodontic outcomes.

OBJECTIVE: This 2-year prospective study reports the incidence of prosthetic complications and maintenance events after treatment with mandibular overdenture retained by four mini implants opposed to a maxillary denture. METHODS: Implant intervention included flapless or flapped surgery combined with immediate or delayed loading, as part of a randomized clinical trial. Four one-piece titanium-zirconium mini-implants (Straumann Mini Implant System) were inserted, and the retentive PEEK elements (Optiloc) were incorporated into the overdenture using chairside procedures. Prosthodontic complications and maintenance events were recorded over a 2-year follow-up, and the final outcome was defined according to standardized criteria. Data analysis included descriptive statistics, incidence and incidence density rates, and Kaplan-Meier survival. RESULTS: 73 out of 74 patients (64.9 % female), mean age of 64 (SD=8.2) years, completed the study follow-up (one withdrew after 9 months). Implant survival was 100 %. A total of 163 prosthodontic events occurred in 53 patients (72.6 %), and 20 patients had no clinical complaints or maintenance needs. The most common procedures were adjustment/repair of the overdenture base (47.0 %), replacement of retentive inserts (19.8 %), and laboratory relining (12.9 %). A high prosthodontic success rate was achieved (93.2 %), and all patients presented serviceable overdentures and continuous use after the resolution of prosthodontic complications. The incidences of matrix replacement and laboratory relines were low in the first year, while denture base adjustments were common within the first year, especially in the first 6 months. CONCLUSION: The mini implant system showed high prosthodontic success rates. Minor adjustments/repairs during the initial follow-up were common. Relines and matrix replacements tend to occur after one year of overdenture use, and matrix replacements may occur as a consequence of the need for relining.

Mandibular overdenture retained by four one-piece titanium-zirconium mini implants: A 2-year RCT on patient-reported outcomes.

AIM: The positive impact of implant interventions on dental patient-reported outcomes is an essential parameter of treatment effectiveness. This study assessed the 2-year changes in patient satisfaction and oral health-related quality of life (OHRQoL) of edentulous patients treated with a four mini implant mandibular overdenture (IOD) METHODS: The study was planned as a 2 × 2 factorial randomized clinical trial that tested two surgical approaches (flapped or flapless) and two loading protocols (immediate and delayed) using a titanium-zirconium mini implant (Straumann Mini Implant System®) and a PEEK retentive system (Straumann® Optiloc® Retentive System). Outcome measures (OHIP-Edent scores and the McGill Denture Satisfaction questionnaire) were assessed before treatment and at the 3-, 6-, 12-, and 24-month follow-ups. The Friedman test and multiple regression using Generalized Estimating Equations (GEE) were used for data analysis, considering the per-protocol (PP) and intention-to-treat (ITT) approaches RESULTS: Seventy-four patients were randomized to the study groups. No implant failure occurred during the study period. Marked improvement in all post-treatment periods compared to baseline were observed for the two outcomes. No significant effect of patient's gender, age, and surgical protocol on the study outcomes. The effect of treatment provision was significant for the two outcomes in the PP and ITT approaches (p < 0.001). A barely significant positive effect of the immediate loading was observed for OHIP-Edent in the PP approach (p = 0.020) CONCLUSION: IOD treatment significantly improved patient-reported outcomes measures, with sustained benefits over the two years of overdenture use, and can be considered a promising treatment option in for the edentulous mandible.

Gender differences among dentistry conference speakers in Brazil / Diferenças de gênero entre palestrantes de congressos odontológicos no Brasil

ABSTRACT This study aimed to evaluate possible gender differences among the invited speakers of Brazilian dentistry meetings. The selected meetings (n=15) were held in different states distributed among the five Brazilian regions. The conference programs were manually reviewed, and a database was constructed. Data analysis was performed using descriptive statistics, chi-square and Mann-Whitney tests. A total of 1,195 speakers was identified, 19.7% (n= 235) of which were women. The results of this study provide an overview of the trends of gender disparity in dentistry conferences in Brazil. These findings suggest disseminated gender-discriminatory practices in the promotion of women participation as speakers in such events. This requires more effective approaches to promote gender balance among conference organizing committees and encourage greater visibility and promotion of equity and diversity policies in dental professional societies to ensure more equitable conference programs.

RESUMO Este estudo objetivou avaliar possíveis disparidades de gênero entre palestrantes de congressos de odontologia. Os congressos selecionados (n=15) aconteceram em diferentes estados, distribuídos entre as cinco regiões do País. A programação dos congressos foi avaliada, e um banco de dados foi construído. Os dados foram analisados por estatística descritiva (testes qui-quadrado e Mann-Whitney). Foram identificados 1.195 palestrantes, dos quais 19,7% (n=235) eram mulheres. Os resultados deste estudo fornecem uma visão geral das tendências de disparidade de gênero em conferências odontológicas no Brasil. Sugerem disseminação de prática discriminatória na participação de mulheres como palestrantes nesses eventos. São necessárias abordagens mais eficazes para promover o equilíbrio de gênero entre os comitês organizadores dos congressos, encorajando e promovendo políticas de equidade e diversidade, ampliando a participação e o protagonismo das mulheres nesses eventos.

Effect of endodontic sealer in young molars treated by undergraduate students - a randomized clinical trial

Abstract The progression of caries in permanent molar teeth of young patients, frequently result in endodontic treatment. This randomized blinded clinical trial assessed the effect of two endodontic sealers (Sealer 26 and AH Plus) on the incidence of pain and apical repair after endodontic treatment of young molar teeth, and secondly identify factors associated with the outcomes. Endodontic treatment was performed by undergraduate students in molar teeth (n=69) of young patients (n=54) at the Endodontic and Restorative Public Extension Clinic Service. Protaper Next was used and the endodontic sealers were allocated which were restored with direct composite resin. Two primary clinical outcomes - apical repair and postoperative pain, were assessed after 12 and 24 months for blinded operators. Description of incidence rates and mixed-model regression using Generalized Estimation Equations (GEE). After 2 years 69 molar teeth of 54 patients were evaluated. No effect of the endodontic sealer was observed irrespective of period of evaluation. Apical repair incidences and asymptomatic teeth were, respectively, 90.5 and 89.3, 96.8 and 90.0% during 1 and 2 years of follow-up. Failed apical repair was associated with unsatisfactory pulpectomy (p=0.003) and periapical conditions (p=0.007) as well as their interaction (p=0.016). None of these independent variables was able to predict the occurrence of pain in both periods. Prognosis of apical repair is dependent on the initial conditions. Endodontic treatment of young molars associated with composite resin restorations performed by undergraduate students have satisfactory results after 2 years and was effective to prevent the risk of permanent teeth loss.

Resumo A rápida progressão das lesões de cárie nos dentes molares permanentes de pacientes jovens, frequentemente resulta no tratamento endodôntico. Este ensaio clinico randomizado cego avaliou o efeito de dois cimentos endodônticos (Sealer 26 e AH Plus) na incidência de dor e reparo apical após tratamento endodôntico de dentes molares jovens e identificar fatores associados aos desfechos do tratamento. O tratamento endodôntico foi realizado por estudantes de graduação em dentes molares permanentes (n=69) de pacientes jovens (n=54) na Clínica de Extensão Endodôntica e Restauradora da Universidade Federal de Uberlândia, Brasil. Protaper Next foi usado e os dois cimentos foram distribuídos aleatoriamente nas amostras, as quais foram restauradas com resina composta direta. Dois desfechos clínicos primários - reparo apical e dor pós-operatória foram avaliados após 12 e 24 meses por operadores de forma cega. Análise longitudinal dos dados incluiu a descrição das taxas de incidência e modelo de regressão misto usando Equações de Estimativa Generalizadas (GEE). As incidências (%) do reparo apical e dos dentes assintomáticos foram respectivamente 90,5/89,3 e 96,8/90,0 nos períodos de 1 e 2 anos de acompanhamento. Ausência de reparo apical foi associada com pulpectomia insatisfatória (p=0,003) e condições periapicais (p=0,007), bem como sua interação (p=0,016). Nenhuma dessas variáveis independentes foi capaz de prever a ocorrência de dor nos períodos de acompanhamento. O tratamento endodôntico mostrou resultados satisfatórios após 2 anos. O prognóstico do reparo apical depende das condições iniciais. Nenhum efeito do cimento endodôntico foi observado. O tratamento endodôntico de molares jovens associado com restaurações em resina composta realizado por estudantes de graduação tem um papel relevante na redução do risco de perda do dente permanente.

Reabilitação com Instalação de Implante Imediato em Região de Molar com Abordagem Alternativa de Osteotomia: Relato de Caso / Rehabilitation With Immediate Implant Placement in Molar Region Using an Alternative Osteotomy Approach: a Case Report

Objetivo: apresentar um caso clínico de instalação de implante imediato em região de bifurcação após exodontia de molar com uma técnica de osteotomia alternativa com o preparo do sitio implantar previamente à remoção das raízes. Materiais e métodos: em dezembro de 2017, JNPS, 39 anos de idade, sexo masculino, compareceu à Faculdade de Odontologia com queixa do dente 46 fraturado sem sintomatologia dolorosa. Nos exames clínicos e radiográficos o dente 46 apresentava tratamento endodôntico, sem remanescente coronário e amplo septo inter-radicular que favorecia a instalação de implante imediato. A cirurgia ocorreu em fevereiro de 2018 com o preparo do leito do implante na região do centro do dente previamente à exodontia. Em seguida foi realizada a extração das raízes de forma minimamente traumática, visando preservar a estrutura circundante. Foi utilizado um implante Cone Morse 3,75x9mm (Titamax CM Cortical ­ Neodent, Curitiba, Brasil). O torque final de inserção foi de 20 N/cm e foi instalado o cicatrizador para procedimento cirúrgico de 1 estágio. Após 4 meses foi instalado o pilar protético (Pilar CM ­ Neodent, Curitiba, Brasil) com altura de 2,5 mm e nas sessões seguintes foram realizados os procedimentos para confecção de coroa metalocerâmica. Resultados: no acompanhamento de 12 meses após instalação do implante, verificou-se aspectos clínicos e radiográficos de normalidade, além de satisfação do paciente com o tratamento. Conclusão: a técnica utilizada facilita o preparo do leito receptor e a instalação de implante em condições de estabilidade favorável, podendo ser empregada em situações clínicas semelhantes.

Objective: to present a case report of immediate implant surgery in the region of an extensively damaged molar using an alternative osteotomy technique with bone drilling prior to root extraction. Materials and methods: in December 2017 JNPS, 39-years-old male patient, attended to the Faculty of Dentistry, complaining about a fractured tooth without pain symptoms. At clinical and radiographic exams, tooth #46 was endodontically treated without coronal structure and wide inter-radicular septum, favoring the insertion of an immediate implant. Implant surgery was performed in February 2018 by drilling the implant bone site in the central region of the tooth prior to extraction. Then, the roots were extracted using minimally traumatic procedures, aiming to preserve the surrounding bone structure. A 3.75x9 mm morse taper implant (Titamax CM Cortical, Neodent, Curitiba, Brazil) was inserted. The final insertion torque was 20 N/cm was obtained and a healing cap was installed for a onestage surgical procedure. After 4 months, a 2.5mm height prosthetic abutment (Pilar CM - Neodent, Curitiba, Brazil) was installed and in the following appointments the procedures for fabrication of a metalceramic crown were performed. Results: in the 12-month follow-up, clinical and radiographic aspects of normality were observed, and patient reported satisfaction with the treatment. Conclusion: the technique used in this clinical case facilitated the bone preparation for implant insertion, preserving bone structure for a favorable implant stability, and may be recommended for similar clinical situations.

Use of QR code as personal identification of complete dentures ­ literature review / Uso do código QR como identificação pessoal de próteses totais - revisão de literatura

Different methods for identification of complete dentures have been described as well as the importance of its use. Recently, the QR code has been highlighted as a simple and effective novelty for this purpose, but its use in daily clinical practice is still poorly reported. The aim of this study was to perform a literature review regarding the use of the QR code in complete dentures as a system of personal identification of denture wearers. An electronic search was performed in the Pubmed database in June 2017. A specific search strategy was developed and executed, considering as inclusion criteria studies published in the last 10 years. After selecting and reading titles and abstracts, 8 studies were included in the final list. The use of the QR code in complete dentures has been described as simple, efficient and capable of storing a considerable amount of information. Some laboratory studies have tested the resistance of the QR code covered by acrylic resin against adverse conditions such as heat, chemicals and fractures, which, in general, confirmed the feasibility of using this identification alternative. It is important to point out the need for dissemination among dentistry students and patients regarding the benefits and legal importance of having a complete denture identification system.

Diferentes métodos de identificação de prótese total têm sido descritos na literatura científica, bem como a importância de sua utilização. O código QR (QR code) tem sido destacado recentemente como uma novidade simples e efetiva para este fim, porém seu uso na prática clínica diária ainda é pouco relatado. O objetivo deste estudo foi realizar uma revisão de literatura a respeito do uso do código QR como sistema de identificação pessoal de usuários de próteses totais. Foi realizada uma busca eletrônica na base Pubmed em junho de 2017. Uma estratégia de busca específica foi elaborada e executada, considerando-se como critério de inclusão estudos publicados nos últimos 10 anos. Após seleção e leitura dos títulos e resumos, 8 estudos foram incluídos na lista final. O uso do código QR em próteses totais é descrito como um método de identificação simples, eficaz e capaz de armazenar uma quantidade considerável de informações. Alguns estudos laboratoriais testaram a resistência do código QR coberto por resina acrílica frente a condições adversas como calor, substâncias químicas e fraturas os quais, em geral, confirmaram a viabilidade de uso desta alternativa de identificação. Ressalta-se a necessidade da divulgação entre estudantes de Odontologia e pacientes a respeito dos benefícios e importância legal em haver um sistema de identificação em próteses totais.

Fatores associados ao edentulismo funcional em idosos brasileiros / Factors associated with functional edentulism in elderly Brazilians

Introdução: a retenção de uma dentição natural funcional e estética com pelo menos 20 dentes é uma meta global de saúde bucal da Organização Mundial de Saúde. Apesar da redução expressiva das perdas dentárias entre adolescentes e adultos, isso não vem ocorrendo entre idosos, indicando um acúmulo da necessidade de reabilitação protética nessas populações. Objetivo: Identificar os fatores individuais e contextuais associados ao edentulismo funcional em idosos no Brasil. Métodos: Trata se de um estudo transversal tendo como amostra os idosos de 65 a 74 anos investigados no levantamento epidemiológico Pesquisa Nacional de Saúde Bucal de 2010 (SBBrasil 2010). O desfecho investigado foi o edentulismo funcional – presença de menos de 20 dentes naturais. As variáveis independentes foram organizadas em modelo multinível, considerando o ambiente externo, características socioeconômicas dos indivíduos, o comportamento relacionado à saúde bucal e suas características demográficas. Resultados: A prevalência de edentulismo funcional foi de 73,3% (IC95%= 69,7 76,9). Ser do sexo feminino, possuir menores níveis de renda familiar e maior tempo transcorrido desde a última visita ao dentista, e ter realizado a última consulta odontológica por motivos não relacionados à revisão, prevenção ou check up, extração, dor ou tratamento foram fatores associados ao edentulismo funcional. Conclusão: Os fatores de risco associados ao edentulismo funcional em idosos reforçam o impacto das desigualdades sociais. Estratégias para melhoria das condições de vida e promoção de comportamentos saudáveis têm o potencial de reduzir a prevalência de perda dentária.

Introduction: the retention of a functional and aesthetic dentition with at least 20 natural teeth is a global goal of World Health Organization. Despite the important reduction of tooth loss in teenagers and adults, this is not occurring in elderly, indicating an accumulation of the need for prosthetic rehabilitation in these populations. Objective: To identify individual and contextual factors associated to functional edentulism in Brazilian elderly. Methods: This cross sectional study investigates a sample of 65 to 74 years elderly from the National Oral Health Survey 2010 (SBBrasil 2010). The outcome variable was functional edentulism, i.e., presence of less than 20 natural teeth. Independent variables were organized into multi level model, considering the external environment, socioeconomic characteristics of subjects, oral health related behavior and demographic characteristics. Results: The prevalence of functional edentulism was 73.3% (CI95%=69.7 76.9). Being female, having lower levels of household in come and more time elapsed since the last visit to the dentist, and having attended the last dental appointment for reasons unrelated to the revision, prevention or check up, extraction, pain or treatment were factors associated the functional edentulism. Conclusion: The risk factors related to functional edentulism in elderly reinforce the impact of social inequalities. Strategies for improving living conditions and promoting healthy behaviors have the potential to reduce the prevalence of tooth loss.

Ineffectiveness of Antibiotic-Based Pulpotomy for Primary Molars: a Survival Analysis

To investigate the two-year survival rate of primary molars treated with non-instrumentation endodontic treatment with mixed antibiotic paste containing chloramphenicol, tetracycline, zinc oxide and eugenol (CTZ pulpotomy), and compare it to the conventional root canal treatment with calcium hydroxide paste. Material and Methods:Thirty-six children, mean age 6.2 years old (standard deviation, SD=1.5), presenting at least one primary molar with irreversible pulpitis or necrotic pulp, were included in this prospective clinical study. Teeth were assigned to CTZ pulpotomy (Group I) or calcium hydroxide pulpectomy (Group II) and assessed clinically and radiographically for up to 26 months. Data were analyzed using descriptive statistics, Chi-square test, Kaplan-Meier survival analysis and Log-rank test. Results:Fifty-three primary molars were treated in Group I (n=37) or Group II (n=16). Children were followed up for 1 to 26 months (mean=12.0; SD=7.1). Treatment failure rates were 73.0% in Group I and 31.3% in Group II. Overall, mean survival time was 15.2 months (95% confidence interval, CI 12.6û17.9); Group I (mean 13.2; 95% CI 10.2-16.3) had a lower survival rate than Group II (mean 18.9; 95% CI 14.5-23.2) (p=0.02). Necrotic pulp treatments had significantly lower survival rates (p=0.01) than pulpitis treatments. Conclusion:Non-instrumentation endodontic treatment of primary molars with CTZ paste resulted in a low survival rate in a two-year follow-up; its radiographic ineffectiveness discourages its use instead of conventional root canal endodontic treatment...

Prevalência de relação sexual e fatores associados em adolescentes escolares de Goiânia, Goiás, Brasil / Prevalence of sexual intercourse and associated factors among adolescents attending schools in Goiânia in the state of Goiás, Brazil

Objetivou-se investigar a prevalência de relação sexual em adolescentes de um município brasileiro e sua associação com fatores sociodemográficos, comportamentos de risco à saúde e percepção da imagem corporal. Estudo transversal utilizando dados da Pesquisa Nacional de Saúde do Escolar - PeNSE realizada em 2009. A amostra foi composta por escolares do 9° ano de Goiânia, Goiás (n = 3.099), com predomínio das idades de 13 a 15 anos. A variável dependente foi o relato de relação sexual alguma vez. Para identificação das variáveis associadas foi realizada análise de regressão de Poisson. A prevalência de relação sexual alguma vez foi de 26,5% (IC95% = 23,8-29,4). Este comportamento foi mais prevalente em adolescentes do sexo masculino, com idade de 14 anos ou mais, que não moravam com a mãe ou com o pai, estudavam em escolas públicas, relataram ter experimentado álcool, tabaco e outras drogas, e envolvimento em brigas e agressão familiar. Conclui-se que a prevalência de relação sexual alguma vez foi elevada e associada a condições sociodemográficas mais precárias, comportamentos de risco à saúde e violência. Estes fatores devem ser considerados nas estratégias de promoção de saúde, visando comportamentos sexuais seguros e saudáveis na adolescência.

This study sought to investigate the prevalence of sexual intercourse among adolescents in a Brazilian city and its association with sociodemographic factors, health-risk behaviors, and body image perception. A cross-sectional study was conducted using data from the National Adolescent School-based Health Survey (PeNSE), carried out in 2009. The sample comprised schoolchildren enrolled in the 9th year in the city of Goiânia, Goiás (n= 3,099), mostly aged between 13 and 15. The dependent variable was the reporting of sexual intercourse at least once. To identify variables associated with sexual activity, Poisson regression analysis was used. The prevalence of sexual intercourse at least once in the adolescents' lifetime was 26.5% (95% CI= 23.8-29.4). Prevalence was higher among males, those aged 14 years or older, who reported not living with their mother or with their father, who attended public schools, reported alcohol, tobacco or other drug use, and were involved in fights and family violence. The conclusion reached was that the prevalence of sexual intercourse was high and associated with poor sociodemographic conditions, health-risk behaviors and violence. These factors should be considered in the health promotion strategies seeking more safe and healthy sexual behavior during adolescence.

Sexual behavior of school-aged adolescents in the city of Goiânia, Goiás / Comportamento sexual de adolescentes escolares da cidade de Goiânia, Goiás

OBJECTIVE: To investigate the characteristics of sexual behavior in school-aged adolescents and possible differences regarding sex and type of school. METHODS: Cross-sectional study using data from the National Adolescent School-based Health Survey (PeNSE) 2009, carried out by the Brazilian Ministry of Health, in partnership with the Brazilian Institute of Geography and Statistics (IBGE). The sample consisted of 3,099 9th graders living in Goiânia, State of Goiás, Brazil, mostly aged between 13 to 15 years old, who answered a self-applicable questionnaire on risk and protective health factors. The Rao-Scott test was used in the statistical analysis, considering the complex sample design. RESULTS: The prevalence of sexual intercourse was of 26.5% (95%CI 23.8 - 29.4) at least once in life and of 18.5% (95%CI 16.5 - 20.8) in the last year. Both behaviors were more frequent among male students and among those attending public schools. Most of the respondents had their first intercourse at the age of 13 or younger, with up to 3 partners. They had also used a pregnancy prevention method in the last intercourse, and received guidance on prevention at school. The age of the first intercourse was earlier and the number of partners was higher among male students. More females and those attending public schools reported having received information on pregnancy prevention. Guidance on STD/AIDS was also more frequent in public schools. CONCLUSION: Results showed a need for health education measures involving education and health professionals, as well as parents, to reduce the discrepancies found regarding sex and type of school. .

OBJETIVO: Investigar as características do comportamento sexual de adolescentes escolares e verificar se há diferenças em relação ao sexo dos estudantes e ao tipo de escola. MÉTODOS: Estudo transversal utilizando dados da Pesquisa Nacional de Saúde do Escolar (PeNSE) 2009, realizada pelo Ministério da Saúde em parceria com o IBGE. A amostra foi composta por 3.099 escolares do 9° ano residentes em Goiânia (GO), com predomínio das idades de 13 a 15 anos, que responderam um questionário sobre fatores de risco e proteção à saúde. Na análise estatística, foi utilizado o teste de Rao-Scott, considerando o efeito do desenho amostral para amostras complexas. RESULTADOS: A prevalência de relação sexual alguma vez na vida foi de 26,5% (IC95% 23,8 - 29,4), e, no último ano, foi de 18,5% (IC95% 16,5 - 20,8), sendo mais frequentes entre os meninos e estudantes de escolas públicas. A maioria teve a primeira relação com 13 anos ou menos, com até 3 parceiros, utilizou algum método contraceptivo na última relação e recebeu orientação sobre prevenção na escola. A idade da primeira relação foi mais precoce e o número de parceiros foi mais elevado entre os meninos. O relato de orientações recebidas sobre prevenção de gravidez foi mais frequente entre meninas e nas instituições privadas. Nestas, foi também mais elevado o relato de orientações sobre DST/AIDS. CONCLUSÃO: Os resultados mostraram a necessidade de ações educativas, buscando reduzir as discrepâncias encontradas em relação ao sexo e o tipo de escola, com envolvimento de profissionais das áreas da educação e saúde e dos pais. .