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1.
Braz. j. oral sci ; 20: e210432, jan.-dez. 2021. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1254269

RESUMO

Aim: The aim of this study was to evaluate, by micro-computed tomography (micro-CT) analysis, the remaining filling material during endodontic retreatment performed with Protaper retreatment without solvent. Methods: Forty mandibular molars were divided into two groups (n = 20) according to the sealer used in the obturation: the bioceramic TotalFill BC (TF) or the resin-based AH Plus (AHP). The specimens were scanned before instrumentation, after obturation and after filling removal. Only the mesial roots were analysed. The filling volumes and the remaining filling material were calculated in the entire root canal and in the cervical, middle and apical thirds. Results: The volume of obturation and the volume of remaining filling material in the entire root canal and in the cervical, middle and apical thirds of the canal between the groups were not statistically different (independent t-test, p > 0.05). In the AHP group, there was a higher percentage of remaining filling material in the middle third than in the cervical third (p < 0.05). Conclusion: The filling material could not be entirely removed from any specimen


Assuntos
Materiais Restauradores do Canal Radicular , Retratamento , Microtomografia por Raio-X , Dente Molar
2.
Dental Press J Orthod ; 26(4): e2119146, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34468560

RESUMO

INTRODUCTION: Maxillary molar distalization is a common approach for correcting dental Class II malocclusions. OBJECTIVE: This study aimed at comparing the outcomes of maxillary first molar distalization using the Carriere appliance before and after second molar eruption. METHODS: Two groups of patients with dental Class II malocclusions were treated with Carriere distalizer appliance with heavy rectangular mandibular wire and lingual arch for anchorage. Patients of the first group presented unerupted maxillary second molars during the distalization period. In the second group, maxillary second molars were in occlusion on treatment onset. Cone beam computed tomography images were taken at the beginning of treatment and after finishing molar distalization, to compare both groups regarding first molar distalization, intrusion, mesiodistal tipping, buccolingual torquing and rotation, anchorage loss and skeletal changes. Also, the treatment durations were compared. RESULTS: The mean first molar distalization period in the first group (19.2 ± 1.6 weeks) was significantly smaller than the second group (23.3 ± 2.3 weeks). The amount of maxillary first molar distalization was significantly greater, while the amount of rotation was significantly smaller in the first group. No statistically significant differences in the amounts of maxillary first molar intrusion, mesiodistal tipping and buccolingual torquing between both groups was found. Mandibular incisor labiolingual torquing and mandibular first molar mesialization and mesiodistal tipping were significantly greater in the second group. CONCLUSIONS: Maxillary first molar distalization before maxillary second molar eruption is more efficient, with less anchorage loss than after second molar eruption.


Assuntos
Má Oclusão Classe II de Angle , Procedimentos de Ancoragem Ortodôntica , Cefalometria , Humanos , Má Oclusão Classe II de Angle/diagnóstico por imagem , Má Oclusão Classe II de Angle/terapia , Maxila/diagnóstico por imagem , Dente Molar/diagnóstico por imagem , Desenho de Aparelho Ortodôntico , Técnicas de Movimentação Dentária
3.
Dental Press J Orthod ; 26(4): e2119360, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34524380

RESUMO

INTRODUCTION: Orthodontists have been using clear aligners to treat malocclusions, and one potential effect of treatment with orthodontic aligners is the intrusion and/or resists extrusion of the posterior teeth. This "bite-block effect" is primarily anecdotal due to the frequent occurrence of posterior open bites in patients after clear aligner therapy. OBJECTIVE: The purpose of this study was to compare changes promoted by clear aligners and traditional fixed appliances in cephalometric measurements of the vertical dimension and molar position in adult patients with Class I malocclusion treated with non-extraction. METHODS: Pre- and post-treatment lateral cephalometric radiographs of adult patients treated with either clear aligners (n=44) or traditional fixed appliances (n=22) were selected for retrospective analysis. Eight interval measurements and one nominal measurement were evaluated: anterior overbite (OB), mandibular plane angle related to cranial base (SN_MP) and related to Frankfort (FMA), lower molar height (L6H) and upper molar height (U6H), palatal plane to mandibular plane angle (PP_MP), lower facial height (LFH), total facial height (TFH), and posterior open bite (Posterior_OB). A single evaluator traced all cephalographs, and changes in select measures of the vertical dimension were compared within and between groups. RESULTS: OB decreased (1.15 mm) and L6H increased (0.63 mm) in the traditional fixed appliance group. Mandibular plane angles (related to cranial base and to Frankfort) increased (0.43° and 0.53°, respectively) in the clear aligner group, but just FMA showed significant difference between groups (difference of 0.53°). LFH and TFH increased (ranging from 0.52 mm to 0.80 mm) in both groups, with no differences between treatment modality. Presence of visible posterior open bite significantly increased over the course of treatment. OB, FMA and L6H exhibited an interaction between treatment stage (pre- and post-treatment) and modality (clear aligner therapy and traditional fixed appliances), but no interaction among these three variables was found. CONCLUSIONS: The evidence does not support the theory that clear aligner therapy produces better vertical dimension control than traditional fixed appliances. Traditional fixed appliance therapy slightly extruded the lower molar, and clear aligner therapy produced a slightly mandibular backward rotation.


Assuntos
Má Oclusão Classe II de Angle , Aparelhos Ortodônticos Removíveis , Adulto , Cefalometria , Humanos , Mandíbula , Dente Molar/diagnóstico por imagem , Aparelhos Ortodônticos Fixos , Estudos Retrospectivos , Dimensão Vertical
4.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 56(9): 873-879, 2021 Sep 09.
Artigo em Chinês | MEDLINE | ID: mdl-34496535

RESUMO

Objective: To record occlusal contact of primary dentition at maximal intercuspal position in children with individual normal occlusion. Methods: A total of 57 children were recruited from patients of the Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology. Inclusion criteria were that the subjects were 3-5 years old with no visually detectable caries or pupal and periapical diseases, had complete primary dentition, had individual normal occlusion, had normal function of craniofacial system, were medically healthy, could cooperate with sampling and had obtained written informed consent from the parents or guardians. Finally, forty-seven children aged 3 to 5 years old were enrolled, including 24 males and 23 females. The age, height and weight of all subjects were (4.1±0.7) years old (ranging 3.0-5.8 years old), (103.7±7.2) cm (ranging 90-120 cm) and (17.1±2.5) kg (ranging 12.5-22.5 kg), respectively. Occlusal abilities such as occlusal contact area, average bite pressure, maximum bite pressure, maximum bite force and occlusal balance were measured with Dental Prescale Ⅱ system. Results: Maximum bite force and occlusal contact area at intercuspal position in children with primary dentition were (567.40±223.84) N (ranging 226.7-1 154.6 N) and (18.56±6.54) mm2 (ranging 8.4-41.2 mm2), respectively. There was a significantly strong correlation between maximum bite force and occlusal contact area (r=0.954, P<0.01). Height and weight of children were also positively correlated with their maximum bite force (r=0.397, P=0.022 and r=0.453, P=0.008, respectively). Maximum occlusal bite force and contact occlusal area of boys [(651.80±224.34) N and (20.77±6.97) mm2] were significantly higher and larger than those of girls [(479.34±190.45) N and (16.25±5.27) mm2] (P<0.05). Thirty-two of all 47 children had one occlusal contact point with maximum bite pressure, mostly locating within the primary molar region. Bite forces of anterior and posterior teeth of primary dentition were (124.12±56.99) N and (450.11±205.09) N, respectively, about (21.82±11.40)% and (71.80±21.35)% of maximum bite force of the whole primary dentition. All of the occlusal balance points located in posterior teeth regions. Occlusal contacts were observed at both anterior and posterior teeth of primary dentition with individual normal occlusion. Conclusions: There was a great variation of maximum bite forces of primary dentitions at intercuspal position of children with individual normal occlusion. Maximum bite force of primary dentition was significantly correlated with occlusal contact area, height and weight of children. Occlusal contact points with maximum bite pressure and occlusal bite balance points of primary dentitions mostly located in primary molar regions.


Assuntos
Força de Mordida , Oclusão Dentária , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Dente Molar , Dente Decíduo
5.
JNMA J Nepal Med Assoc ; 59(240): 741-744, 2021 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-34508488

RESUMO

INTRODUCTION: Endodontics is the study of prevention, diagnosis and treatment of diseases or injuries to the dental pulp. The ultimate goal of modern dental care is tooth preservation and root canal therapy/treatment is an available therapeutic strategy to retain teeth. The aim of the study is to find the prevalence of patients visiting a tertiary care center who had endodontic indications. METHODS: The descriptive cross-sectional study included 516 patients accepted for endodontic treatment, between August 2019 and December 2019 in a tertiary care center. Ethical approval was taken from the ethical review board of Nepal Health Research Council (reference number: 425-2019). Convenience sampling method was used. The data were entered in Statistical Package for Social Sciences version 20 software and analysed using descriptive statistics. Point estimate at 95% confidence interval was calculated along with frequency and proportion for binary data. RESULTS: Out of 1740 patients, 516 (29.66%) (95% Confidence Interval= 21.46% - 27.51%) had endodontic indications. Symptomatic irreversible pulpitis 306 (59.30%) was the most prevalent pulpal disease. Maxillary teeth 300 (58.13%) had more endodontic diseases. While in individual dental elements most affected by endodontic diseases was the mandibular molar teeth 149 (28.87%). Females 348 (67.44%) were predominant for demanding endodontic management than males 168 (32.5%). CONCLUSIONS: More female patients and of younger age group in this study population demanded endodontic treatment. Irreversible pulpitis was responsible for the majority of the cases treated and more affected were the posterior teeth.


Assuntos
Pulpite , Estudos Transversais , Feminino , Humanos , Masculino , Dente Molar , Pulpite/epidemiologia , Pulpite/terapia , Tratamento do Canal Radicular , Centros de Atenção Terciária
6.
JNMA J Nepal Med Assoc ; 59(240): 795-798, 2021 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-34508490

RESUMO

Intracanal separation of nickel titanium files hinders complete shaping, cleaning, and filling of the root canal system and ultimately influences the endodontic treatment outcome. In this case report, we presented a successful broken instrument retrieval from the middle third of the mesiobuccal root canal of tooth #30 with the assistance of cone-beam computed tomograpgy based preoperative computer-assisted simulation, micro-trepan bur and micro-tube from Micro-Retrieve & Repair system and dental operative microscope. The involved tooth was then successfully cleaned, shaped and obturated followed by coronal restoration. At the three-year follow-up, tooth #30 was asymptomatic and functioned well without radiographic changes. The present case provides an example to show the robustness of computer-assisted technology in dental procedures and to show how the combination of advanced techniques can facilitate root canal therapy.


Assuntos
Dente Molar , Preparo de Canal Radicular , Computadores , Humanos , Dente Molar/diagnóstico por imagem , Dente Molar/cirurgia , Tratamento do Canal Radicular , Tomografia
7.
Georgian Med News ; (316-317): 89-96, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34511452

RESUMO

Premature removal of baby teeth is one of the main causes of deformation of the dentition. The loss of the first temporal molars is most often reported (39.9±4.8%), which leads to displacement of the teeth bordering on the defect, narrowing and shortening of the dental arch, which then leads to retention of premolars, cutting out permanent canines outside the dental arch, pathology of cutting out permanent molars. The aim of the study was to evaluate the biomechanics of permanent teeth migration in patients who prematurely lost their first temporal molars. An anthropometric study of jaw models and orthopantomograms was conducted in 25 patients (age 7-12 years) who had premature loss of the first temporal molars of the upper and lower jaws (age 7-12 years). Complications were evaluated, regularity was revealed and the biomechanics of permanent teeth displacement as a result of the prolonged absence of temporary molars were determined.


Assuntos
Dente Molar , Dente Decíduo , Fenômenos Biomecânicos , Criança , Dentição Permanente , Humanos , Mandíbula/diagnóstico por imagem , Dente Molar/diagnóstico por imagem
8.
JNMA J Nepal Med Assoc ; 59(235): 295-302, 2021 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-34506432

RESUMO

Molar and incisor hypomineralization is a developmental defect that is systemic in origin that affects one or more than one permanent first molars, and is often associated with permanent incisors. It is usually characterized by well demarcated opacities and qualitative enamel defects caused by decreased inorganic enamel components, and reduced mineralization. It can cause esthetic, functional, psychological, and behavioral problems in children. Its reported prevalence varies widely, from 2.5% to 40.2%. Multiple aspects of dental treatment for it are challenging, such as behavior management, difficulty in achieving adequate local anesthesia, tooth hypersensitivity, and retention of restorations. This review discusses the most important considerations pertaining to its prevalence, severity, etiology, differential diagnosis, and some of the challenges and treatment modalities applicable in young patients. Data is collected from PubMed, Medline, and Embase databases.


Assuntos
Incisivo , Dente Molar , Criança , Diagnóstico Diferencial , Humanos , Prevalência
9.
Pediatr Dent ; 43(4): 290-295, 2021 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-34467846

RESUMO

Purpose: The purpose of this study was to evaluate the treatment outcomes of multisurface caries in primary molars treated with intracoronal restorations versus stainless steel crowns (SSCs) through a retrospective split-mouth study. Methods: Dental records were screened for patients who had treatment of one primary molar with a multisurface restoration and one primary molar with an SSC. Teeth were followed until a loss to follow-up, exfoliation, or failure. Results: A total of 988 primary molars were evaluated, with a mean follow-up time of 22 months. The survival probabilities for: SSCs were 95.5 percent at one year of service and 92.8 percent at two years of service; and for intracoronal restorations were 92.0 percent at one year of service and 80.0 percent at two years of service. Overall survival analysis showed SSCs to be significantly more successful than restorations (P<0.001), particularly in children treated at ages four years and younger (P<0.001). No statistically significant difference (P=0.10) was found for children treated at ages five years and older. Conclusions: Stainless steel crowns have a higher survival probability versus restorations for multisurface caries. In children ages four years and younger, more aggressive treatment of multi-surface caries with SSCs should be considered, as conservative treatment leads to an increased need for retreatment.


Assuntos
Cárie Dentária , Aço Inoxidável , Criança , Pré-Escolar , Coroas , Cárie Dentária/terapia , Falha de Restauração Dentária , Restauração Dentária Permanente , Humanos , Dente Molar , Estudos Retrospectivos , Dente Decíduo
10.
Chin J Dent Res ; 24(3): 199-202, 2021 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-34491015

RESUMO

Gemination and fusion are developmental conditions affecting the shape of teeth in both primary and permanent dentition. A 12-year-old girl presented for clinical assessment and the examination revealed an unusually shaped mandibular right second molar with irreversible pulpitis. Correlation of the intraoral and radiological appearance of this tooth suggested a diagnosis of either double gemination or fusion. The favourable position of the developing third molar supported early extraction of the abnormal second molar. The present report documents the clinical and radiological presentation of a mandibular second molar with an unusual developmental alteration in shape. Well-timed extraction therapy and good communication may reduce the need for unnecessary, complex treatment.


Assuntos
Dentes Fusionados , Criança , Arco Dental , Dentição Permanente , Feminino , Dentes Fusionados/diagnóstico por imagem , Dentes Fusionados/cirurgia , Humanos , Dente Molar/diagnóstico por imagem , Dente Molar/cirurgia
11.
J Evid Based Dent Pract ; 21(3): 101587, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34479663

RESUMO

OBJECTIVE: This meta-evaluation aimed to summarize all available evidence regarding different fissure sealants on occlusal caries prevention, arrest, retention rate, adverse effect, and cost-effectiveness; when compared with no intervention, other preventive or minimally-invasive procedures. MATERIALS AND METHODS: The systematic reviews and meta-analyses were identified via four electronic databases and manual searching. Two independent reviewers performed study selection, data extraction, quality assessment with AMSTAR-2. RESULTS: Among the 366 records yielded, 38 systematic reviews were identified as eligible 24 of them included meta-analyses. Moderate evidence has supported the efficacies of resin-based sealants (RBS) in occlusal caries prevention, arrest and cost-effectiveness compared to no interventions. Low to very low certainty of evidence suggested similar effectiveness of glass-ionomer cements in caries prevention with RBS and more superior performance of resin infiltration in arresting non-cavitated occlusal lesions. CONCLUSION: This meta-evaluation supports the use of RBS on permanent molars to reduce occlusal caries occurrence, arrest lesion progression and alleviate oral health inequalities between individuals of different socioeconomic status. This meta-evaluation also advocates further research on glass-ionomer cements and resin infiltration with respect to their efficacies in caries prevention and arrest.


Assuntos
Cárie Dentária , Selantes de Fossas e Fissuras , Cárie Dentária/prevenção & controle , Suscetibilidade à Cárie Dentária , Cimentos de Ionômeros de Vidro , Humanos , Dente Molar
12.
BMC Oral Health ; 21(1): 381, 2021 08 02.
Artigo em Inglês | MEDLINE | ID: mdl-34340674

RESUMO

BACKGROUND: Sufficient biofilm removal in the furcation area (FA) is a major challenge in the clinical practice of supportive periodontal therapy. The aim of the present experimental study was to simulate subgingival cleaning of the FA using a powered scaler (sonic scaler (AIR), ultrasonic scaler (US)) for conventional mechanical debridement versus two air polishing with nonabrasive powder (LAPA-1: glycine powder, LAPA-2: erythritol powder) and different nozzles for supra-/subgingival cleaning for each device. METHODS: Seven trained and calibrated operators with ≥ 2 years each of professional experience in treating periodontitis used the instruments to clean 3D-printed replicas of six molars with through-and-through FA (four 3-rooted and two 2-rooted teeth) in a manikin head. AIR and US were used in the control group; air polishing instruments were used in the test group. For reproducible evaluation, the test teeth were separated vertically into two or three parts, illuminated with ultraviolet light, photographed and evaluated planimetrically. Treatment time (TrT, in s) and relative cleaning efficacy (RCE, in %) were measured. RESULTS: Overall, 3-rooted molars (RCE in the entire FA, 23.19 ± 20.98%) could be cleaned significantly less effectively than 2-rooted molars (53.04 ± 28.45%, p < 0.001), regardless of the instrument used. In the cleaning of the entire FA, significantly higher RCE values were achieved with conventional mechanical debridement (AIR/US: 46.04 ± 25.96%/39.63 ± 22.02%; AIR vs. US: p > 0.05) than with air polishing (LAPA-1/LAPA-2: 34.06 ± 29.48%/17.09 ± 18.85%; LAPA-1 vs. LAPA-2: p < 0.001) regardless of whether a supra- or subgingival cleaning nozzle used (p < 0.001). Only LAPA-1 with a subgingival nozzle showed RCE values comparable to those of US (41.07 ± 28.95% vs. 39.63 ± 22.02%, p > 0.05). TrT was longest for US (299.40 ± 120.69 s) and shortest for LAPA-1 with a supragingival nozzle (129.67 ± 60.92 s, p < 0.001). CONCLUSIONS: All of the examined instruments were effective to some degree in removing the simulated biofilm from the FA, but they differed substantially in cleaning efficacy. Only one air polishing device (LAPA-1) with a rigid subgingival nozzle was able to achieve RCE values similar to those of US. The current investigation confirmed that conventional mechanical debridement with powered scalers were most effective, but treatment took longer with these devices than air polishing.


Assuntos
Raspagem Dentária , Periodontite , Instrumentos Odontológicos , Humanos , Dente Molar , Pós
13.
Braz Oral Res ; 35: e058, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34346946

RESUMO

This study aimed to evaluate the efficacy of non-invasive and micro-invasive treatments on the arrest of occlusal enamel carious lesions in erupting permanent molars. This two-arm randomized clinical trial included 27 subjects, aged 5-11 years, with 64 erupting permanent molars presenting active occlusal enamel carious lesions (as assessed by the International Caries Detection and Assessment System [ICDAS]; scores 1-3). The sample was randomly assigned into two treatment groups: 1) resin-modified glass ionomer cement sealant (Clinpro XT Varnish; 3M ESPE) and 2) 4-week topical fluoride varnish application (Duraphat; Colgate). All children and parents received oral hygiene and dietary instructions. Teeth were evaluated at baseline and 3, 6, 9, and 12 months regarding the eruption stage, biofilm accumulation, as well as severity and activity of the carious lesions. The Kaplan-Meier method was used to evaluate the survival estimates for inactivation of the carious lesions for both treatment groups. Multivariate Cox regression models with shared frailty were performed to identify factors associated with the outcome (p < 0.05). After 12 months, 22% and 3% of the lesions treated with topical fluoride varnish and sealant, respectively remained active. The adjusted model demonstrated that younger children had a higher probability of active enamel carious lesions arresting (hazard ratio [HR] 0.42, 95% confidence interval [CI] 0.22-0.78; p=0.01). However, the probability of active enamel carious lesions arresting after sealant application was 8.85 times higher compared with fluoride varnish applications (p=0.01). Sealing is a more effective approach than fluoride varnish for arresting occlusal enamel carious lesions in erupting permanent molars.


Assuntos
Cárie Dentária , Selantes de Fossas e Fissuras , Criança , Cárie Dentária/terapia , Fluoretos , Fluoretos Tópicos/uso terapêutico , Cimentos de Ionômeros de Vidro , Humanos , Dente Molar , Selantes de Fossas e Fissuras/uso terapêutico
14.
Artigo em Inglês | MEDLINE | ID: mdl-34360261

RESUMO

There is a paucity of information concerning vital pulp treatment outcomes in the undergraduate teaching setting. This study aimed to determine which type of deciduous molar, arch location, type of vital pulp therapy, and the number of carious surfaces involved had a better prognosis when carried out by undergraduate dental students. The method used was the review of clinical records of 590 patients with 600 deciduous molars, that visited the outpatient undergraduate dental clinics for vital pulp therapy. Statistical analysis used to determine the associations of tooth type, arch location, treatment type, and the number of carious surfaces involved in successful outcomes was logistic regression analysis with significance set at p < 0.05. According to the regression analysis model results, there was a significant association based on tooth type (p < 0.05) and arch location (p = 0.003). In addition, there was a significant association based on the type of treatment performed (p = 0.036). However, there was no significant association in success rates based on the number of carious surfaces involved (p = 0.873). In conclusion, second deciduous molars and maxillary deciduous molars had a better overall prognosis, and indirect pulp therapy was revealed to be more highly associated with successful treatment outcomes in comparison to ferric sulfate pulpotomy in our setting.


Assuntos
Cárie Dentária , Dente Decíduo , Cárie Dentária/terapia , Humanos , Dente Molar , Pulpotomia , Estudos Retrospectivos , Resultado do Tratamento
15.
Am J Orthod Dentofacial Orthop ; 160(2): 302-311, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34332692

RESUMO

INTRODUCTION: Computer-aided design and manufacturing of orthodontic retainers from digitally debonded models can be used to facilitate same-day delivery. The purpose of this prospective clinical study was to validate a novel technique for virtual bracket removal (VBR) in-office, comparing the accuracy with 2 orthodontic laboratories that use VBR for retainer fabrication in the digital workflow. METHODS: The sample consisted of 40 intraoral scans of 20 patients. Four groups were compared. The scans without brackets were used as a control group. VBR was performed by 3 groups: In-office VBR (Software Meshmixer, version 3.5.474; Autodesk, San Rafael, Calif), Orthodent Laboratory (ODL; Buffalo, NY), and New England Orthodontic Laboratory (NEOLab; Andover, Mass). The virtually debonded models were superimposed onto the control models using surface-based registration. Regional 3-dimensional Euclidean distances between surface points of superimposed models were calculated for comparative analysis of surface changes after VBR using Vector Analysis Module (Canfield Scientific, Fairfield, NJ) software. RESULTS: The accuracy of VBR using the Meshmixer did not differ significantly from the VBR protocols used by the 2 laboratories. However, there was a statistically significant difference between the 2 laboratories, with ODL showing lower accuracy than NEOLab. Although some differences were statistically significant, they were very small and not considered clinically relevant. There was also a statistically significant difference between the 3 tooth segments (incisors, canines/premolars, and first molars), with VBR of the first molars and second premolars showing the least accuracy. CONCLUSIONS: The VBR techniques using the in-office Meshmixer, ODL, and NEOLab were considered accurate enough for the clinical use of orthodontic retainers fabricated from printed models.


Assuntos
Braquetes Ortodônticos , Contenções Ortodônticas , Dente Pré-Molar , Desenho Assistido por Computador , Humanos , Dente Molar , Estudos Prospectivos
16.
BMJ Case Rep ; 14(8)2021 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-34344652

RESUMO

Patients with rapidly progressing periodontitis may require extractions of teeth with poor periodontal prognosis. Although replacement with a dental implant is a popular choice, teeth autotransplantation remains a viable option. Herein, we report a case of a 23-year-old patient with rapidly progressing periodontitis resulting in severe clinical attachment loss on the left maxillary first molar, which required extraction. The tooth was replaced by tooth autotransplantation of the unerupted immature left mandibular third molar, which was delivered carefully without compromising the periodontal ligament. Cone beam computed tomography and three-dimensional printing of the third molar donor tooth significantly aided the tooth autotransplantation procedure. Recovery was uneventful. At the 1-year follow-up, healthy periodontal parameters and radiographic features were noted, and the autotransplanted tooth remained vital. This case showed that tooth autotransplantation is a viable option for replacing tooth loss due to rapidly progressing periodontitis.


Assuntos
Periodontite , Dente , Adulto , Humanos , Dente Molar/diagnóstico por imagem , Dente Molar/cirurgia , Dente Serotino/diagnóstico por imagem , Dente Serotino/cirurgia , Periodontite/complicações , Periodontite/diagnóstico por imagem , Periodontite/cirurgia , Impressão Tridimensional , Transplante Autólogo , Adulto Jovem
17.
J Appl Oral Sci ; 29: e20200998, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34406315

RESUMO

OBJECTIVES: The aim of this study is to evaluate the effect of using gel and solution forms of NaOCI during the chemomechanical preparation of the root canals on postoperative pain at different time intervals. METHODOLOGY: 114 patients with mandibular molar teeth and symptomatic irreversible pulpitis were included in the study. All patients were divided into two groups based on the irrigant used during root canal preparation (n=57): Group 1, 5.25% NaOCI, Group 2, 5.25% NaOCI gel. All groups were filled with gutta-percha and AH Plus root canal sealer using single-cone technique. VAS scale (1-10) was used for postoperative pain assessment. After endodontic treatment, all patients were asked to record their postoperative pain levels at the 6th, 24th, 48th, 72nd hours, and 1 week later. The data were analyzed using Chi-Squared, Independent Samples T, Cochran Q and Friedman tests. RESULTS: Statistically significant difference was not found between the distributions of pain levels at different times according to the groups (p>0.050). A statistically significant difference was observed between the distributions of pain levels measured at different times in the solution group (p<0.001). A statistically significant difference was found between the distributions of pain levels measured at different times in the gel group (p<0.001). In both groups, highest postoperative pain levels occurred in the first 6 hours. Pain levels of the gel group as 38,5% mild, 17.3% moderate, 5.8% severe and pain levels of the solution group were obtained as 46.2% mild, 26.9% moderate, 9.6% severe at the 6th hour. CONCLUSIONS: The use of the gel form of NaOCI during the chemomechanical preparation of the root canals showed similar postoperative pain when compared to the solution form.


Assuntos
Materiais Restauradores do Canal Radicular , Hipoclorito de Sódio , Cavidade Pulpar , Guta-Percha , Humanos , Dente Molar , Dor Pós-Operatória/prevenção & controle , Obturação do Canal Radicular , Preparo de Canal Radicular
18.
J Evid Based Dent Pract ; 21(2): 101542, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34391554

RESUMO

OBJECTIVE: Reporting of randomized controlled trials (RCTs) in dentistry remains suboptimal. Considering the positive impact of the Consolidated Standards of Reporting Trials (CONSORT) guidelines on the quality of evidence in RCTs, the main objective of this systematic review was to determine whether RCTs on dental caries prevention conform to these guidelines. The secondary objective was to assess the association between CONSORT adherence and the year and impact factor of the journal in which the study was published. METHODS: A systematic search was conducted in different databases using appropriate terms to retrieve RCTs that assessed the caries-preventive effect of at least 2 of the following materials-fluoride varnish, resin-based fissure sealants, and ionomer-based fissure sealants-on the occlusal surfaces of permanent molars. Since the first CONSORT statement was published in 1996, a time frame from 1997 to 2020 was established for the identification of studies. Selected articles were assessed according to their adherence to the CONSORT statement, risk of bias (Cochrane risk of bias tool, RoB 2.0), and journal impact factor based on the InCites Journal Citation Reports. The year of publication and other relevant data were also recorded. SPSS (SPSS Statistics 25.0, IBM©) was used to perform the linear correlation analyses to determine the relationship between the article CONSORT score (previously determined) and the year of publication and journal impact factor. A significance level of 5% was established for all analyses. RESULTS: Of 3196 references retrieved, 30 articles were selected and evaluated. Using RoB 2.0, 8 studies were classified as having a high risk of bias, 16 as having some concerns about the risk of bias assessment, and 6 as having a low risk of bias. Concerning CONSORT adherence, 77% of the studies adequately reported the intervention domain, since the methodology for the application of fluoride varnish or sealant materials was thoroughly described. However, the participants' setting and location, random sequence generation, randomization, and the flowchart description of the losses/exclusions domains were poorly reported. Meanwhile, the allocation concealment process was not reported in 83% of the articles. Correlation analyses indicated a positive relationship between CONSORT adherence and the year of publication, as well as the journal impact factor. CONCLUSION: When assessing clinical trials on the prevention of occlusal caries, most RCTs examined followed the CONSORT statement. However, some methodological domains remain poorly reported, demonstrating the need to improve CONSORT compliance in these RCTs.


Assuntos
Cárie Dentária , Selantes de Fossas e Fissuras , Cárie Dentária/prevenção & controle , Fluoretos , Humanos , Dente Molar , Ensaios Clínicos Controlados Aleatórios como Assunto
19.
J Contemp Dent Pract ; 22(6): 680-685, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-34393127

RESUMO

AIM: The aim of the study is (a) To use collagen as a pulpotomy material in comparison with the gold standard formocresol-based pulpotomy, (b) to assess the clinical and radiographic success rate of formocresol pulpotomy and collagen-based pulpotomy, and (c) to compare the success rate of formocresol-based pulpotomy and collagen-based pulpotomy over a definitive interval of time. MATERIALS AND METHODS: Totally 30 primary first or second molars indicated for pulpotomy after confirming with the operative diagnosis were taken as samples for this study. This split-mouth technique consists of two groups: Group 1-formocresol pulpotomy (n = 15), and group 2-collagen-based pulpotomy (n = 15). Both the procedures were done in the same patient on regular appointments. Pre- and postoperative radiographs were taken. The children were recalled for clinical and radiographic follow-up at 2, 4, and 6 months. The success of the procedure was assessed based on clinical signs (pain, tenderness to percussion, abscess, swelling, fistula, and pathologic mobility) and radiographic findings (radicular radiolucency, internal and external root resorption, periodontal ligament (PDL) space widening, and furcation radiolucency). The Chi-square test was used to compare the differences between the groups. RESULT: The overall success rate for formocresol pulpotomy (n = 15) was 14, 13, and 10 for the second-, fourth-, and sixth-month review period, respectively. For collagen pulpotomy group (n = 15), the overall success rate was 14, 14, and 14 for the second-, fourth-, and sixth-month review period, respectively. The obtained data from the overall success rate were subjected to statistical analysis, and chi-square test was used. The p-value less than 0.1 was considered a statistically significant result. The chi-square value for the fourth- and sixth-month review was 0.37 and 3.33, respectively. CONCLUSION: Statistically significant value was obtained from the sixth-month review period (p <0.1), which describes that the overall success rate was better for the collagen pulpotomy group when compared with the formocresol pulpotomy group. CLINICAL SIGNIFICANCE: Collagen had proven to be a very good alternative for formocresol, its biocompatibility, and regenerative efficiency and is a benchmark for a better clinical success rate in dentistry. However, its implication in pulpotomy should be subjected to further comparative research study on mineral trioxide aggregate (MTA), Biodentine, etc. Keywords: Collagen-based pulpotomy, Formocresol-based pulpotomy.


Assuntos
Formocresóis , Pulpotomia , Compostos de Alumínio , Compostos de Cálcio , Criança , Colágeno , Combinação de Medicamentos , Humanos , Dente Molar/diagnóstico por imagem , Dente Molar/cirurgia , Óxidos , Silicatos , Dente Decíduo
20.
J Indian Prosthodont Soc ; 21(3): 269-275, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34380814

RESUMO

Aim: Assess the retention of endocrowns fabricated of different CAD/CAM materials. Settings and Design: In vitro - comparative study. Material and Methods: Root canal treated mandibular first molars were prepared in a standardized method. Standardized endocrowns were manufactured using four CAD-CAM blocks: resin infiltrated ceramic (Vita Enamic), partially stabilized tetragonal zirconia (Katana), lithium disilicate ceramic (IPS e.max CAD), and polyether-ether-keton (PEEK, BioHPP). After proper surface treatment, the restorations were cemented using a resin cement (Panavia F2.0) and were connected to a special attachment unit and secured to a universal testing machine. The amount of axial load required to dislodge the restoration from the tooth structure was measured (n = 12, α = 0.05). Failures were classified as adhesive debonding from the tooth structure without damaging the supporting tooth structure and cohesive fracture of the supporting tooth structure. Statistical Analysis Used: One-way analysis of variance,Tukey's post hoc test. Results: The retention of Vita Enamic (61 ± 11 N) and IPS e.max CAD (58 ± 9 N) was significantly higher (F = 123, P < 0.01) than Katana (33 ± 13) and Peek restorations (23 ± 11). Vita Enamic and IPS e.max CAD were associated with fractured tooth segments during debonding while Katana and PEEK specimens were adhesively debonded from the remaining tooth structure. Conclusions: Within the limitations of this study, using lithium disilicate ceramics and resin infiltrated ceramics as restorative materials to fabricate endocrowns to restore severely damaged endodontically treated teeth, recorded significantly higher retention values. Meanwhile, using yttrium partially stabilized zirconia and polyether ether ketones for the same purpose recorded a favorable mode failure which avoided the possibility of tooth fracture.


Assuntos
Dente não Vital , Desenho Assistido por Computador , Humanos , Teste de Materiais , Dente Molar , Cimentos de Resina
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