Effect of Chlorhexidine and Tea Tree Oil on Reducing the Number of Oral Microorganisms.

OBJECTIVES: Thus, the aim of this study was to compare the effect of using two preoperative mouthwashes (0.12% chlorhexidine and 0.2% tea tree oil) on the number of colonies of oral microorganisms. MATERIALS AND METHODS: Forty participants who needed to be rehabilitated with dental implants were included in this study. They were randomly divided into two groups (chlorhexidine group and tea tree group; n = 20, each). For each group, saliva samples were collected at four different times: T0 (initially)-before using the mouthwash, T1-after 1 minute of using the mouthwash, T10-after 10 minutes of using the mouthwash, and T60-after 60 minutes of using the mouthwash. At T0 and T1, saliva samples were collected before implant placement surgery, and at T10 and T60, saliva samples were collected during surgery. In each group, one saliva sample was collected at each evaluated time point for each patient, totaling 4 saliva collections per patient. MSB agar (Mitis-Salivarius-Bacitracin) and BHI agar (Brain Heart Infusion) culture media were used in each group. Microbial colony counts were performed using a magnifying glass and recorded in CFU (colony forming units)/mL. Statistical analyses were performed using the Friedman, Mann-Whitney U and Wilcoxon tests (p < 0.05). RESULTS: Based on MSB agar culture medium, at T0, the number of Streptococcus mutans colonies in the chlorhexidine group was significantly higher compared with the tea tree group (p <0.05; MSB agar). The chlorhexidine group showed significantly lower CFU/mL values for Streptococcus mutans at T1, T10, and T60 compared with the tea tree group (p <0.05; MSB agar). Based on BHI agar culture medium, at T0, the chlorhexidine group showed a significantly lower value of CFU/mL compared with the tea tree group (p < 0.05; BHI agar). At T1, T10, and T60, the chlorhexidine group showed significantly lower CFU/mL values compared with the tea tree group (p <0.05; BHI agar). CONCLUSION: Chlorhexidine is more indicated as a preoperative mouthwash than tea tree oil, due to its significantly more effective antimicrobial action.

Comparison of piezosurgery and conventional rotary instruments in schneider's membrane sinus lifting: A pilot randomized trial.

BACKGROUND: The present study aimed to evaluate and compare the postoperative effects of the piezoelectric device and conventional rotary instruments in Schneider's membrane sinus lifting procedure. MATERIAL AND METHODS: Twenty patients requiring bilateral maxillary bone graft augmentation in the posterior maxillary region were selected. Piezoelectric surgery was performed on one side and conventional surgery with a rotary diamond bur on the other. Postoperative pain, swelling, edema, and mouth opening were evaluated at one hour and two and seven days after the procedures. All variables were submitted to Friedman or Wilcoxon tests at a 5% significance level. RESULTS: The comparison between groups showed that postoperative pain after one hour and two days was significantly lower (p< 0.05) in the piezoelectric device group. Regarding the edema, the results of both techniques were similar at all times assessed (p> 0.05). Piezosurgery was statistically associated (p< 0.05) with greater mouth opening only at the 48-hour evaluation. CONCLUSIONS: Osteotomy with a piezoelectric device causes less pain and greater mouth opening postoperatively compared with the conventional technique. Key words:Piezosurgery, sinus lift, edema, pain, rotative instruments.

Local anaesthetics combined with vasoconstrictors in patients with cardiovascular disease undergoing dental procedures: systematic review and meta-analysis.

OBJECTIVES: There is a lack of evidence about the use of local anaesthetics (LAs) in patients with cardiovascular diseases (CVD) in dental procedures. Thus, this study evaluated the safety of using LA with vasoconstrictor to determine the risk of cardiovascular events in patients with CVD. DESIGN: Systematic review and meta-analysis. METHODS: We have searched in Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (via Ovid), EMBASE (via Ovid), Healthstar (via Ovid), CINAHL, Web of Science and ClinicalTrials.gov for randomised controlled trials (RCTs) up to January 2020. We have included RCTs involving adults with CVD within two groups: intervention group with LA with vasoconstrictor and control group with LA without vasoconstrictor. The primary outcomes assessed were death, mortality by a specific cause, stroke, acute myocardial infarction, hospitalisation, pain, bleeding and arrhythmias. The secondary outcomes were ST segment depression, anxiety, adverse effects and changes in haemodynamic parameters. The data were pooled using random effects meta-analyses and the confidence in the estimates was verified using the Grading of Recommendations Assessment, Development and Evaluation (GRADE). RESULTS: Ten RCTs (n=478 participants) were included. Most of them had a high risk of bias. There were more cases of pain and bleeding in groups without vasoconstrictor. Meta-analysis demonstrated a decrease in the systolic blood pressure with the use of LA with vasoconstrictor (standard mean difference -0.95, 95% CI -1.35 to -0.55) after procedure. Overall, for the other outcomes assessed there was no statistical difference. The quality of evidence was considered low according to the GRADE profile. CONCLUSIONS: The results suggest that the use of LA with vasoconstrictors (epinephrine in low doses) is safe in patients with some types of CVD. However, the low quality of evidence demonstrated that literature needs further studies in order to confirm these results. PROTOCOL REGISTRATION: PROSPERO (CRD42016045421).

Preemptive use of intravenous ibuprofen to reduce postoperative pain after lower third molar surgery: a systematic review of randomized controlled trials.

This study aimed to systematically review the literature to assess the effect of preemptive intravenous ibuprofen on pain reduction after lower third molar surgery. Nine databases (PubMed, Scopus, LILACS, SciELO, Embase, Web of Science, Cochrane, Open Gray, and Open Thesis) were used as sources of research, including "grey literature." The protocol was registered in PROSPERO. Only randomized clinical trials evaluating the effects of preemptive intravenous ibuprofen on pain during and immediately after the extraction of lower third molars were included, without restrictions of year and language. Two reviewers independently performed the study selection, data extraction, and assessment of the risk of bias. The "Joanna Briggs Institute for Randomized Controlled Trials" tool was used to assess the risk of bias. Each study was categorized according to the percentage of positive responses to the questions corresponding to the assessment instrument. The results were measured narratively/descriptively. The initial search resulted in 3,257 records, of which only three studies (n=150 participants) met the eligibility criteria and were included in the qualitative analysis. All studies were published in 2019. The risk of bias ranged from low to moderate. Two studies found significant pain reduction within 48 h after the procedure. In conclusion, the use of preemptive intravenous ibuprofen for extracting third molars reduces pain and analgesic consumption after the surgical procedure.

Evaluation of tensile strength after insertions andremovals of abutments on frictional Morse taper implants

ABSTRACT: This study aimed to evaluate possible changes in final retention after nine sequences of insertion and removal (SIR) of a frictional Morse taper implant/abutment system, evaluating the force required for dissociating this set between sequences, and verifying possible deformations in the implant heads. Ten implants, 13 mm long and 3.3 mm in diameter, were coupled to a universal mechanical testing machine. Ten anti-rotational abutments, 13 mm long and 3.5 mm in diameter, were connected to the implants parallel to the long axis, using an instrument called beat-connection, and subjected to tensile tests and SEM analysis. The results were analyzed using the Kruskal-Wallis test with Dunn's post-test, and the significance level was set at 5 %. There was no statistically significant difference in final retention among the nine SIRs evaluated. The force needed to uncouple the abutment from the implant increased as SIRs were performed on all ten implants, and an increase of 29.03 % was observed in the ninth SIR compared to the first SIR. After SEM analysis, no significant deformations, fractures, or cracks were observed in the implant heads.

RESUMEN: Este estudio tuvo como objetivo evaluar los posibles cambios en la retención final después de nueve secuencias de inserción y extracción (SIR) de un sistema de implante / pilar de cono de fricción Morse, evaluando la fuerza necesaria para disociar este conjunto entre secuencias y verificando posibles deformaciones en las cabezas de los implantes. Se acoplaron diez implantes, de 13 mm de largo y 3,3 mm de diámetro, a una máquina universal de ensayos mecánicos. Se conectaron a los implantes en paralelo al eje largo diez pilares antirrotacionales, de 13 mm de largo y 3,5 mm de diámetro, mediante un instrumento llamado beat-connection, y se sometieron a pruebas de tracción y análisis SEM. Los resultados se analizaron mediante la prueba de Kruskal-Wallis con la prueba posterior de Dunn, y el nivel de significancia se estableció en 5 %. No hubo diferencias estadísticamente significativas en la retención final entre los nueve SIR evaluados. La fuerza necesaria para desacoplar el pilar del implante aumentó a medida que se realizaban SIR en los diez implantes, y se observó un aumento del 29,03 % en el noveno SIR en comparación con el primer SIR. Después del análisis SEM, no se observaron deformaciones, fracturas o grietas significativas en las cabezas de los implantes.

Single-channel electroencephalography and its associations with anxiety and pain during oral surgery: a preliminary report.

BACKGROUND: This study aimed to assess the course of anxiety and pain during lower third molar (LTMo) surgery and explore the role of mobile and single-channel electroencephalography under clinical and surgical conditions. METHODS: The State-Trait Anxiety Inventory (STAI), Corah's Dental Anxiety Scale (DAS), and Interval Scale of Anxiety Response (ISAR) were used. The patient self-rated anxiety (PSA), the pain felt during and after surgery, EEG, heart rate (HR), and blood pressure (BP) were assessed. RESULTS: The Attention (ATT) and Meditation (MED) algorithms and indicators evaluated in this study showed several associations. ATT showed interactions and an association with STAI-S, pain during surgery, PSA level, HR, and surgical duration. MED showed an interaction and association with DAS, STAI-S, and pain due to anesthesia. Preclinical anxiety parameters may influence clinical perceptions and biological parameters during LTMo surgeries. High STAI-Trait and PSA scores were associated with postoperative pain, whereas high STAI-State scores were associated with more pain during anesthesia and surgery, as well as DAS, which was also associated with patient interference during surgery due to anxiety. CONCLUSIONS: The findings suggest that single-channel EEG is promising for evaluating brain responses associated with systemic reactions related to anxiety, surgical stress, and pain during oral surgery.

Effectiveness and safety of oral sedation in adult patients undergoing dental procedures: a systematic review.

OBJECTIVES: It can be challenging to manage patients who are anxious during dental procedures. There is a lack of evidence regarding the effectiveness and safety of oral sedation in adults. This study evaluated the effectiveness and safety of oral sedation in patients undergoing dental procedures. DESIGN: Systematic review. METHODS: Randomised clinical trials (RCTs) compared the oral use of benzodiazepines and other medications with a placebo or other oral agents in adult patients. A search of the Cochrane (CENTRAL), MEDLINE (via Ovid), EMBASE (via Ovid) and Cumulative Index to Nursing and Allied Health Literature (via Ovid) databases was conducted, without any restrictions on language or date of publication. The primary outcomes included the adverse effects and anxiety level. The secondary outcomes included sedation, satisfaction with the treatment, heart rate, respiratory rate, blood pressure and oxygen saturation. Reviewers, independently and in pairs, assessed each citation for eligibility, performed the data extraction and assessed the risk of bias. A narrative synthesis of the data was provided. RESULTS: A number of RCTs (n=327 patients) assessed the use of benzodiazepines (n=9) and herbal medicines (n=3). We found good satisfaction with treatment after the use of midazolam 7.5 mg or clonidine 150 µg and reduced anxiety with alprazolam (0.5 and 0.75 mg). Midazolam 15 mg promoted greater anxiety reduction than Passiflora incarnata L. 260 mg, while Valeriana officinalis 100 mg and Erythrina mulungu 500 mg were more effective than a placebo. More patients reported adverse effects with midazolam 15 mg. Diazepam 15 mg and V. officinalis 100 mg promoted less change in the heart rate and blood pressure than a placebo. CONCLUSIONS: Given the limitations of the findings due to the quality of the included studies and the different comparisons made between interventions, further RCTs are required to confirm the effectiveness and safety of oral sedation in dentistry. PROSPERO REGISTRATION NUMBER: CRD42017057142.

Preemptive use of intravenous ibuprofen to reduce postoperative pain after lower third molar surgery: a systematic review of randomized controlled trials

This study aimed to systematically review the literature to assess the effect of preemptive intravenous ibuprofen on pain reduction after lower third molar surgery. Nine databases (PubMed, Scopus, LILACS, SciELO, Embase, Web of Science, Cochrane, Open Gray, and Open Thesis) were used as sources of research, including "grey literature." The protocol was registered in PROSPERO. Only randomized clinical trials evaluating the effects of preemptive intravenous ibuprofen on pain during and immediately after the extraction of lower third molars were included, without restrictions of year and language. Two reviewers independently performed the study selection, data extraction, and assessment of the risk of bias. The "Joanna Briggs Institute for Randomized Controlled Trials" tool was used to assess the risk of bias. Each study was categorized according to the percentage of positive responses to the questions corresponding to the assessment instrument. The results were measured narratively/descriptively. The initial search resulted in 3,257 records, of which only three studies (n=150 participants) met the eligibility criteria and were included in the qualitative analysis. All studies were published in 2019. The risk of bias ranged from low to moderate. Two studies found significant pain reduction within 48 h after the procedure. In conclusion, the use of preemptive intravenous ibuprofen for extracting third molars reduces pain and analgesic consumption after the surgical procedure.

Assessment of the stresses produced on the bone implant/tissue interface to the different insertion angulations of the implant - a three-dimensional analysis by the finite elements method.

BACKGROUND: The present study aimed to assess the stresses produced on the surface of the bone tissue around dental implants with three different insertion angulations subjected to axial and oblique loading. MATERIAL AND METHODS: The study was created according to the recommendations of the Checklist for Reporting In-vitro Studies (CRIS). The Straumann™ bone level RC (4.1 x 10 mm) implant, Cone Morse connection (CM), RC Straumann Variobase™ with abutment (3.5 mm) was placed in the region of element 16, with the platform positioned at the height of the bone crest. Three assessment models were produced: model M1 or control - implant perpendicular to the bone crest; model M2 - implant angulated at 17° relative to the bone crest; and model M3 - implant angulated at 30° relative to the bone crest. The masticatory loads were simulated with 100 N of intensity and two loading patterns (axial and oblique) were applied to each model. Then, the models were exported to the finite elements simulation software Ansys Workbench V19.2 (Ansys Inc., Canonsburg, PA, USA). To assess the finite elements, qualitative and quantitative analyses were performed. RESULTS: It was observed that, under axial loading, qualitatively, the peaks occurred in the cavosurface region, palatal aspect in M1 and M2, and buccal aspect in M3. Quantitatively, the greatest angulation resulted in a low stress peak. Under oblique loading, qualitatively, the peaks occurred in the cavosurface region, buccal aspect in the three groups. Quantitatively, the greatest angulation of the implant resulted in an increase in stress peaks on the buccal aspect. CONCLUSIONS: Under axial loading, the three insertion angulations of the implant - M1, M2, and M3 - were clinically viable. When subjected to oblique loading, the 30° angulation (M3) suggested a significant risk of bone loss and it was contraindicated. Key words:Finite element analysis, dental implants, load support.

Tratamento da Classe III com protração e retração em massa utilizando ancoragem esquelética / Treatment of Class III with mass Protection and retracting using skeletal anchorage

Resumo Introdução: Na busca do controle de ancoragem e da biomecânica ideal, surgem opções terapêuticas que associam ancoragem óssea e dispositivos biomecânicos. Os mini-implantes ortodônticos vieram constituir de maneira definitiva, um eficiente método de ancoragem, que são utilizados para otimização de resultados com mecânicas mais simples. O presente trabalho tem como objetivo apresentar um caso clínico de Classe III em paciente adulto tratado com o uso de uma Placa Versátil de Ancoragem Esquelética (PVAE) apoiada sobre mini-implantes instalados no palato e minimplantes instalados na região posterior da mandíbula. Resultados: Após 11 meses de tratamento, a mordida cruzada anterior foi completamente corrigida e um relacionamento molar e canino Classe I foi alcançado. Houve uma melhora significativa no perfil do paciente, mostram dose uma face harmoniosa e um perfil facial agradável. Conclusões: A combinação do uso da Placa Versátil de Ancoragem Esquelética no palato, mini-implantes na região posterior da mandíbula e da Ortodontia Lingual, para casos compensatórios de Classe III, mostrou ser uma opção viável. (AU)

Abstract Introduction: In the search for anchorage control and optimal biomechanics, therapeutic options arise that associate bone anchorage and biomechanical devices. The orthodontic mini-implants came to be a definitive method, an efficient anchoring method, which are used to optimize results with simpler mechanics. The present study aims to present a Class III clinical case in an adult patient treated with a Versatile Skeletal Anchoring Plate (PVAE) supported on mini-implants installed on the palate and minimplants installed in the posterior region of the mandible. Results: After 11 months of treatment, the anterior cross bite was completely corrected and a Class I molar and canine relationship was achieved. There was a significant improvement in the patient's profile, showing a harmonious face and a pleasant facial profile. Conclusions: The combination of the use of the Versatile Skeletal Anchoring Plate in the palate, mini-implants in the posterior mandible and Lingual Orthodontics, for Class III compensatory cases, was shown to be a viable option. (AU)

Comparação de estratégias para aprimoramento de graduandos de Odontologia na prescrição medicamentosa / Comparison of different teaching strategies to improve the knowledge of Dental students about prescribing standards

O objetivo deste estudo foi avaliar diferentes estratégias para o aprimoramento de graduandos de Odontologia sobre normas de prescrição medicamentosa. Foram avaliados 72 estudantes, os quais foram divididos aleatoriamente em 3 grupos (n=24): Grupo 1 ­ em cada etapa de avaliação foi apresentado um vídeo explicativo sobre normas de prescrição com duração de 15 minutos; Grupo 2 ­ o mesmo vídeo foi disponibilizado em uma plataforma virtual (com acesso ilimitado); Grupo 3 ­ controle: os estudantes não tiveram atividades adicionais sobre o tema. Foram realizadas 4 avaliações e os voluntários receberam um caso clínico diferente em cada avaliação, realizando uma prescrição para a situação clínica proposta. Para cada prescrição realizada foi atribuída uma pontuação considerando diferentes itens: identificação do profissional e do paciente, concentração, dose e quantidade do medicamento, instruções, dentre outros. Os resultados obtidos foram submetidos à análise estatística, com nível de significância de 5%. Não foram observadas diferenças significativas na avaliação basal entre os grupos (p>0,05). Após o uso das diferentes estratégias foram observados melhores resultados para G1 quando comparados a G2 e G3 (p<0,05). Concluiuse que o uso do vídeo presencial foi o que proporcionou melhores resultados em relação às normas de prescrição de medicamentos (AU).

The aim of this study was to evaluate different teaching strategies to improve the knowledge of dental students about prescribing standards. We evaluated 72 students who were randomly separated into 3 groups (n = 24): Group 1 - at each evaluation stage, an explanatory video about prescription rules was presented; Group 2 - the same video was made available on a virtual platform (with unlimited access); Group 3 - control: the students did not have additional activities on the subject. During the study period 4 evaluations were performed, and all participants received a different clinical case to carry out a prescription for the proposed clinical situation. For each prescription performed, a score was given to different items: identification of professional and patient, concentration, dosage and quantity of the medicine, instructions, among others. The results were submitted to statistical analysis and the level of significance was set at 5%. No significant differences were observed at baseline between groups (p> 0.05). However, after using the strategies better results were observed for G1 when compared with G2 and G3 (p<0.05). It could be concluded that among the strategies used, the use of video was the one that provided an improvement in knowledge of dental students in relation to prescribing standards (AU).

Simulação de alta fidelidade realística para o ensino de emergências médicas na prática odontológica: relato de experiência / High-fidelity simulation as a teaching method in medical emergencies in dental practice: experience report

Os cirurgiões-dentistas devem estar preparados para eventuais situações de emergências médicas que podem ocorrer durante o atendimento odontológico. Entretanto, muitos profissionais não se sentem preparados para executar estes procedimentos e têm pouca experiência em treinamentos práticos. Desta forma, o objetivo deste artigo é relatar a experiência de uma atividade de simulação em diferentes cenários de emergências médicas na prática odontológica. Esta metodologia envolve o uso de um simulador de alta fidelidade e permite a discussão na sala de debriefing sobre os principais procedimentos e treinamento prático para o manejo de emergências médicas. A simulação de alta fidelidade realística para o ensino de emergências médicas na prática odontológica representa um cenário inovador e é eficaz para o processo de ensino e aprendizagem (AU).

Dentists should be prepared to manage eventual medical emergencies that occur in the dental practice. However, many dentists are not fully prepared to manage these situations and have insufficient experience training in medical emergencies. The aim of this paper is to report the experience of educational activities using a high-fidelity simulator in different scenarios in order to prepare dental professionals for medical emergencies in the dental clinic. This methodology allows discussion in the debriefing room regarding the main techniques and procedures to be performed in clinical practice in cases of emergencies and training of dentists to meet these situations. It can be concluded that high-fidelity simulation represents an innovative learning scenario and it is an effective educational method to prepare dental professionals for medical emergencies (AU).

Clinical evaluation of two dexamethasone regimens in the extractions of impacted third molars-a randomized clinical trial.

PURPOSE: The aim of the present study was to compare two therapeutic protocols of dexamethasone for the prevention of postoperative swelling, pain, and other complications after the extraction of impacted third molars, in a prospective, randomized, crossover, double-blinded clinical trial. METHODS: Fifty patients with symmetrical impaction of third molars were randomly assigned to two different protocols of dexamethasone for each side. Patients underwent two sessions performed at a 21-day interval. In group 1, patients took 8 mg of dexamethasone orally 1 h before the procedure, and in group 2, 4 mg dexamethasone orally 1 h before and 24 h after the procedure. Surgery duration, volume of local anesthetics, surgical technique, and rescue medication were standardized. Postoperative pain was evaluated using a visual analog scale (VAS) at predefined times: before operation; immediately after; 1, 2, 4, and 12 h; and 1, 2, 3, and 7 days after operation. The patients were also instructed to take notes of the number of rescue medication tablets taken. Edema and mouth opening were clinically evaluated before surgery and in the postoperative period (second and seventh postoperative days). RESULTS: There were no significant differences between groups for VAS scales (p = 0.5048), but the use of rescue medication was significantly lower in group 1 (p = 0.006). None statistically significant differences (p > 0.05) were observed between groups in any of the time points for all measurements of edema. However, the mouth opening limitation (DIINC) was bigger (p = 0.0069) for group 1 at 2 days. CONCLUSION: Pre-emptive use of different dexamethasone regimens had a beneficial effect against pain, edema, and mouth opening limitation, especially when administered at an 8 mg concentration, which suggests that this protocol may also be efficient for more invasive surgery.

The effects of subcutaneous injection of nicotine on osseointegration of machined and anodized implants in rabbits.

PURPOSE: To evaluate the influence of subcutaneous injection nicotine in osseointegration process on different implant surfaces. METHODS: Twenty-two male rabbits were distributed into two groups according to the subcutaneous injections: (1) nicotine 3 mg/day/kg and (2) 0.9 % NaCI 3 mL/day/kg, three times a day; subgroups were then designated-machined and anodized implants were placed in the right and left tibia bones, respectively. The animals were submitted euthanasia after periods of eight weeks to determine nicotine and cotinine levels, alkaline phosphatase and biomechanical analysis. RESULTS: The plasmatic levels of nicotine and cotinine were 0.5 ± 0.28 ng/mL and 9.5 ± 6.51 ng/mL, respectively. The alkaline phosphatase analyses in blood levels in control group were observed 40.8 ± 11.88 UI/L and 40.75 ± 12.46 UI/L, for the surfaces machined and anodized, respectively. In the test group was observed levels 37.9 ± 4.84 UI/L, for both implant surfaces. No significant differences were observed between control and test groups and between the implant surfaces regarding alkaline phosphatase blood levels. For biomechanics, no significant differences were observed in control group between the machined (25±8.46 Ncm) or anodized (31.2 ± 6.76 Ncm) implants. However, the treatment with nicotine induced higher torque than control in both machined (38.3 ± 13.52 Ncm) and anodized (35.5 ± 14.17 Ncm) implants, with p = 0.0024 and p = 0.0121, respectively. CONCLUSION: Subcutaneous injection of nicotine following implant insertion didn't have effect on osseointegration, independently from the implant surface.

Effectiveness and safety of oral sedation in adult patients undergoing dental procedures: protocol for a systematic review.

INTRODUCTION: The management of anxious patients undergoing dental procedures is still a challenge in clinical practice. Despite a wide variety of drugs for oral sedation in adult patients, there are relatively few systematic reviews that compare the effectiveness and safety of different drugs administered via this route. Thus, this study will evaluate the effectiveness and safety of oral sedation with benzodiazepines and other agents to patients undergoing dental surgical procedures. METHOD/DESIGN: We will conduct a systematic review and, if appropriate, a meta-analysis of randomised controlled clinical trials that will evaluate the use of conscious sedation administered orally to adult patients undergoing oral surgery. The search will be conducted using electronic databases, such as the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (via Ovid), EMBASE (via Ovid), CINAHL (via Ovid), Lilacs (SciELO) and Capes database, without restriction of languages or date of publication. Primary outcomes include anxiety, sedation, treatment satisfaction, pain and adverse effects. Secondary outcomes include vital parameters (heart rate, respiratory rate and blood pressure) and patient cooperation during intervention. A team of reviewers will independently assess each citation for eligibility and in duplicates. For eligible studies, the same reviewers will perform data extraction, risk of bias assessment and determination of the overall quality of evidence using the Grading of Recommendations Assessment, Development and Evaluation classification system. ETHICS AND DISSEMINATION: The evidence gathered from this study should provide dental surgeons with knowledge on the effectiveness and safety of oral sedation in adults requiring dental surgical procedures. This in turn should contribute towards the decision-making process in dental practice, minimising the risks of anxiety and ineffective pain control in clinical procedures, as well as possible side effects. Ethics approval is not required in protocols for systematic reviews. The systematic review will be published in a peer-reviewed journal and presented at conferences. PROSPERO REGISTRATION NUMBER: CRD42017057142.

The effects of subcutaneous injection of nicotine on osseointegration of machined and anodized implants in rabbits

Abstract Purpose: To evaluate the influence of subcutaneous injection nicotine in osseointegration process on different implant surfaces. Methods: Twenty-two male rabbits were distributed into two groups according to the subcutaneous injections: (1) nicotine 3 mg/day/kg and (2) 0.9 % NaCI 3 mL/day/kg, three times a day; subgroups were then designated-machined and anodized implants were placed in the right and left tibia bones, respectively. The animals were submitted euthanasia after periods of eight weeks to determine nicotine and cotinine levels, alkaline phosphatase and biomechanical analysis. Results: The plasmatic levels of nicotine and cotinine were 0.5 ± 0.28 ng/mL and 9.5 ± 6.51 ng/mL, respectively. The alkaline phosphatase analyses in blood levels in control group were observed 40.8 ± 11.88 UI/L and 40.75 ± 12.46 UI/L, for the surfaces machined and anodized, respectively. In the test group was observed levels 37.9 ± 4.84 UI/L, for both implant surfaces. No significant differences were observed between control and test groups and between the implant surfaces regarding alkaline phosphatase blood levels. For biomechanics, no significant differences were observed in control group between the machined (25±8.46 Ncm) or anodized (31.2 ± 6.76 Ncm) implants. However, the treatment with nicotine induced higher torque than control in both machined (38.3 ± 13.52 Ncm) and anodized (35.5 ± 14.17 Ncm) implants, with p = 0.0024 and p = 0.0121, respectively. Conclusion: Subcutaneous injection of nicotine following implant insertion didn't have effect on osseointegration, independently from the implant surface.

Strategy to control occupational risk for Hepatitis B: impact on the vaccination and seroconversion rates in dentistry students / Estratégia para controle do risco ocupacional de Hepatite B: impacto nas taxas de vacinação e soroconversão de alunos de odontologia

ABSTRACT Objective: To describe the development of a dentistry school strategy in order to reduce the occupational risk related to hepatitis B. Methods: The academic registration documents of 242 students entering the institution between the years 2006 and 2013, were evaluated, among which were of copies of the updated vaccination cards and anti-HBs serologic testing. Demographic variables and others related to the vaccination status of hepatitis B and seroconversion were considered. Results: One hundred percent of the students were found to be vaccinated, and 87.2% had vaccination records of three doses. The results of anti-HBs tests proved seroconversion in 91.3% of the students. From 2011, the dental school was able to institutionalize the follow-up behavior of the students who had anti-HBs non-reactive. Of the twenty individuals whose serology was negative, nine students (45% of the total and all of the 2011-2013 class) were followed-up and repeated the basic vaccination and anti-HBs test; eight seroconverted and one was considered a non-responder, increasing the percentage of immune students to 95%. Eleven (55%) had other unregistered behavior or the documents analyzed showed no data on them. Conclusion: The procedure of following-up the registration in vaccination records required by the Biosafety Committee of the institution was shown to be effective in reducing the occupational risk of hepatitis B among the students.

RESUMO Objetivo: Descrever a experiência de uma Faculdade de Odontologia para redução do risco ocupacional relacionado à hepatite B. Métodos: Foram avaliados os documentos de cadastro acadêmico dos 242 alunos com ingresso na instituição entre os anos de 2006 a 2013, dos quais faziam parte cópias da carteira de vacinação atualizada e do teste sorológico anti-HBs. Variáveis demográficas e relacionadas à situação vacinal da hepatite B e de soroconversão foram consideradas. Resultados: Verificou-se que 100% dos discentes foram vacinados, sendo que para 87,2% havia registro de vacinação em três doses. Os resultados do anti-HBs comprovaram a soroconversão em 91,3% dos alunos. Dos 20 indivíduos, cuja sorologia foi negativa, 9 alunos (45% do total e todos das turmas de 2011 a 2013) foram acompanhados e repetiram o esquema básico de vacinação e o teste anti-HBs, sendo que 8 soroconverteram e 1 foi considerado não respondedor, elevando a frequência de alunos imunes para 95%. Os 11 (55%) restantes não tiveram conduta registrada ou não havia dados sobre os mesmos nos documentos analisados. Conclusão: A conduta de acompanhamento vem mostrando-se efetiva para reduzir o risco ocupacional da hepatite B entre os alunos.

Bleeding risk in patients using oral anticoagulants submitted to surgical procedures in dentistry: a systematic review protocol.

INTRODUCTION: The management of patients undergoing oral surgical procedures using anticoagulants raises concerns regarding the risk of bleeding. Bleeding rates in those patients during or after oral surgical procedures are uncertain. The aim of this study will be to determine the bleeding rate during and after oral surgeries in patients using anticoagulants. METHODS AND ANALYSIS: A systematic review will be conducted and if appropriate, a meta-analysis of randomised clinical trials evaluating the bleeding risk during and after oral surgical procedures in patients using anticoagulants were selected. The literature search will be conducted using electronic databases, such as the Cochrane Central Register of Controlled Trials, MEDLINE (via Ovid), Embase (via Ovid), Cumulative Index to Nursing and Allied Health Literature (via Ovid), LILACS (SciELO) and CAPES database, without restriction of languages or date of publication. The primary outcome will be the occurrence of local bleeding rate during and after oral surgical procedures, and as secondary outcome, the following complications will be considered: implant failure, healing problems and infections. Groups of two independent reviewers will select the titles and abstracts for full-text eligibility. For eligible studies, the same reviewers will perform data extraction, bias risk assessment and determination of the overall quality of evidence for each of the outcomes using the Grading of Recommendations Assessment, Development and Evaluation classification system. Meta-analysis and subgroup analyses will be conducted, to all outcomes, if appropriate. ETHICS AND DISSEMINATION: The systematic review will be published in a peer-reviewed journal, and brief reports of the review's findings will be released directly to the intended audience. The results will help dentists in the decision-making process to minimise the risk of bleeding in patients using anticoagulants in their clinical practice. PROSPERO REGISTRATION NUMBER: CRD42017056986.

Classic Kaposi's sarcoma (non-Hiv-associated) of oral cavity: a case report

Kaposi's sarcoma (KS) is a locally aggressive multicentric mucocutaneous malignant neoplasm. The aim of this article is to report and discuss the immunohistochemical profile of a rare case of classic primary Oral Kaposi's sarcoma presenting on the hard palate of a female patient which was non-HIV and was not immunocompromised (AU)