Aim To evaluate the incidence of root dentinal microcracks after two extraction techniques through micro‐computed tomographic (micro‐CT) analysis. Methodology Thirty pairs of premolars, extracted for orthodontic reasons, were assigned to two experimental groups, following a split‐mouth design (n = 30): traumatic technique group (TTG) – teeth extracted following a conventional protocol using forceps, and an atraumatic technique group (ATG) – teeth extracted following an atraumatic technique protocol in which the root was gently detached from the periodontal ligament using a periotome. All teeth were immediately immersed in distilled water and scanned in a micro‐CT device within 72 h following the extraction. The assessment of the images was completed on cross‐section images by two masked evaluators. The Mann–Whitney test was used to assess the significant differences between the groups regarding the number of cross‐sections displaying microcracks whilst the Fischer’s exact test was used to assess differences in the frequency of specimens with defects (P < 0.05). Results A total of 52 750 micro‐CT cross‐sectional images were evaluated. A total of 352 cross‐sections had at least one dentinal defect. Microcracks were observed in five teeth of the TTG group (n = 352 slices) and in two teeth of the ATG group (n = 103 slices). The statistical analysis used was unable to detect a significant difference between the groups in terms of the number of dentinal microcracks (P = 0.233) and in the frequency of teeth displaying microcracks (P = 0.424). Conclusion A small number of sound teeth without endodontic treatment had dentinal microcracks regardless of the extraction technique applied. No difference was noticed between the traumatic and atraumatic techniques in the incidence of microcracks.

Objetivo: Investigar se a modelagem do sistema Reciproc interfere na realização da técnica Sistema (TC) e compará-las com outras duas técnicas: Cone Único sistema Reciproc (CU) e Mcspadden Modificada(MC), quanto à porcentagem da área preenchida por gutapercha, cimento Ahplus e áreas vazias, no terço apical em canais instrumentados pelo sistema Reciproc ® . Metodologia: Quinze raízes mesiais de molares inferiores foram instrumentadas por instrumento único recíproco R25 e separadas nos grupos: CU, TC e MC. Após as obturações os dentes foram seccionados nos níveis de 2mm e 4mm do forame e imagens foram obtidas para medir a porcentagem da área do canal obturada com os materiais obturadores e os espaços vazios, sendo os dados submetidos ao teste estatístico de Kruskal-Wallis. Resultados: Comparando-se as técnicas sem distinção dos níveis, verificou-se que, para o preenchimento Guta Percha, TC se diferenciou de CU e de MC, apresentando média maior que ambas. Para o Cimento, novamente as diferenças surgiram entre TC e as outras duas, mas com TC apresentando média menor que elas. Com relação à Área Vazia não foi encontrada diferença estatisticamente significativa entre TC, CU e MC. Conclusões: A modelagem proporcionada pela lima R25 do Sistema Reciproc não interfere no emprego da técnica TC. O preenchimento com Guta Percha apresentou maior media na técnica TC, em conseqüência, o Cimento apresentou a menor média, ambos com diferenças significantes para MC e CU. Com relação à Área Vazia o comportamento foi igual para todas as técnicas.Obturação do Canal Radicular; Endodontia; Materiais Restauradores do Canal Radicular.Objective: To investigate whether the shaping promoted by the Reciproc ® system interferes with performing the System technique (TC) in comparison with two other techniques -Single Cone Reciproc ® system (CU) and Modified Mcspadden (MC) -, relative to the percentage of the area filled by gutta-percha and Ahplus sealer and non-filled areas in the apical third of canals instrumented with the Reciproc ® system. Methods: Fifteen mesial roots of mandibular molars were instrumented by a single reciprocate R25 file and assigned to three groups: CU, TC and MC. After root filling, the teeth were sectioned at 2 and 4 mm short of the apical foramen. Images were captured to calculate the percentages of canal area occupied by and free of filling material. Data were analyzed statistically by the Kruskal-Wallis test. Results: Comparison of the techniques regardless of apical levels revealed that for gutta-percha filling, TC presented significantly greater means than CU and MC. For the sealer, TC presented significantly lower means than CU and MC. Regarding the area free of filling material, no statistically significant difference was found among TC, CU and MC. Conclusions: Canal shaping produced by the Reciproc ® system's R25 file does not interfere with the use of the TC technique. Gutta-percha filling presented the greatest mean value with the TC technique and sealer filling presented the lowest mean value, both with sig...

Objetivo: Verificar a presença de dor pós-operatória em dentes com infecções que receberam a terapia endodôntica em sessão única (após obturação) e múltiplas sessões (após uso de medicação intracanal), através de revisão sistemática. Método: Realizou-se pesquisa em fonte de catalogação bibliográfica identificada eletronicamente por MEDLINE, entre 1966 a 20 de fevereiro de 2011. Como estratégia de busca foram utilizados os termos com a expressão "and": single visit root canal treatment, single visit root canal therapy, multiple visit root canal treatment, multiple visit root canal therapy, single visit root canal treatment postoperative pain, single visit root canal therapy postoperative pain, multiple visit root canal treatment postoperative pain, multiple visit root canal therapy postoperative pain, Calcium Hydroxide intracanal medicament, Calcium Hydroxide intracanal medicament postoperavite pain. Resultados: Foram encontrados 278 artigos. Para seleção, critérios de inclusão foram estabelecidos em duas etapas, na primeira 15 trabalhos foram selecionados. Na segunda, como critério de inclusão, trabalhos que continham a avaliação da dor em polpas vivas e necrosadas e que não avaliaram a dor, somente após a obturação em sessão única, e após a medicação intracanal, em sessões múltiplas foram descartados. Do total encontrado, 2 artigos atenderam aos critérios de inclusão. Conclusões: Baseado na análise dos trabalhos selecionados a partir dos critérios de inclusão deste estudo, dentes que receberam a medicação intracanal, a qual foi o hidróxido de cálcio, apresentaram menor intensidade de dor pós operatória, tratamentos de dentes sintomáticos (dor prévia) revelaram os maiores índices de desconforto pósoperatório independente de sessão única ou múltipla. Dor; Periodontite apical; Infecção; Odontalgia. Objective: To check by systematic review the presence of postoperative pain in infected teeth that underwent endodontic therapy in a single Objective: To verify the presence of postoperative pain in teeth with infections who received endodontic therapy in one session (after filling) and multiple sessions (after intracanal medication), through a systematic review. Methods: A research was conducted in the MEDLINE full-text electronic database between 1966 and February 20, 2011. The following key words were used with the expression "and" to narrow the search: single visit root canal treatment, single visit root canal therapy, multiple visit root canal treatment, multiple visit root canal therapy, single visit root canal treatment postoperative pain, single visit root canal therapy postoperative pain, multiple visit root canal treatment postoperative pain, multiple visit root canal therapy postoperative pain, Calcium Hydroxide intracanal medicament, Calcium Hydroxide intracanal medicament postoperative pain. Results: The search retrieved 278 articles, of which 28 were literature reviews, 15 case reports, 16 meta-analyses and systematic reviews. Among the other studies, 33 were in vitro, 10 were in animals, 6 were retrospecti...

The success of an endodontic treatment relies on a correct working length determination. The canal terminus must be detected accurately and a precise control of the working length during the endodontic treatment must be maintained. The aim of this study was to investigate the working length determination in vivo with the Quill Apex Locator® for apical limit established at 1 mm short from the apical foramen (AF). Patients scheduled to dental extraction due to orthodontic or periodontal reasons were selected for this study, resulting in a sample of 24 root canals. Written informed consent was obtained from each patient before the treatment. After the administration of local anesthesia each tooth had its pulp cavity accessed. Next, the reading corresponding to the AF showed on the device's display was recorded and the file was removed. With the use of a digital caliper, 1 mm was subtracted from that first measurement. The file with the new measurement was introduced into to the root canal again then fixed with light curing flow composite and the tooth was extracted. Next, one of the apical third walls was worn out to visualize the instrument's point and the AF. The distance from the file tip to the AF was measured by scanning electron microscopy. The average of the measurements was 1.089±0.437 mm. The Bicaudal t-test showed no significant difference (p=0.338) between the experimental values and the hypothetical value tested at 1 mm. The present investigation confirmed that the Quill Apex Locator® was able to determine the working length with good reliability for the endodontic treatment, established at 1 mm short from the AF.

Introdução: O cisto periapical é uma lesão óssea inflamatória envolvida por um epitélio de revestimento formando uma cavidade com líquido e substâncias semi-sólidas no ápice dental que ocorre mais em região anterior de maxila. Geralmente apresenta-se radiograficamente radiolúcido e unilocular com ou sem sintomatologia sendo cada caso com sua especificidade e isso deve ser levado em consideração na hora da eleição do melhor tratamento, como: o tamanho da lesão, a extensão e áreas próximas vitais. Podemos associar técnicas cirúrgicas como enucleação com técnicas endodônticas. Deste modo, é objetivo:  apresentar um caso de paciente, sexo feminino, 44 anos, que procurou o Complexo de Clinicas Odontológicas da Faculdade de Odontologia da Universidade Federal de Mato Grosso do Sul queixando-se de dor do elemento 11 ao 14. No exame radiográfico junto com exame clínico foi detectado um possível cisto periapical reincidente em região previamente realizada  procedimento cirúrgico de enucleação de cisto periapical. Material e método: A enucleação junto com apicectomia foi o tratamento elegido para a paciente. Este trabalho é um relato de caso sobre associação de técnicas cirúrgicas e endodônticas para o tratamento de cistos periapicais. Conclusão: a remissão da sintomatologia da paciente foi bastante satisfatória e houve melhora de sua qualidade de vida.Descritores: Cisto Periapical, Cisto Radicular, Diagnóstico, Terapêutica.ReferênciasSimon JH. Incidenceof periapical cysts in relationtother root canal. J Endod. 1980;6(11):845-48.Tavares DP, Rodrigues JT, Do Santos TCRB, Armada L, Pires FR. Clinical and radiological analysis of a series of periapical cysts and periapical granulomas diagnosed in a Brazilian population. J Clin Exp Dent. 2017;9(1):129-35.Perjuci F, Abdyli RA, Abdyli Y et al. Evaluation of Spontaneous Bone Healing After Enucleation of Large Residual Cyst in Maxilla without Graft Material Utilization: Case Report. Acta Stomatol Croat. 2018;52(1):60-53.Andrade ED. Terapêuticas medicamentosa em odontologia. 3 ed. São Paulo: Artes Médicas; 2014.Yagiela JA, Dowd FJ, Johnson BS,Mariotti AJ, Neidle EA. Farmacologia e terapêutica para dentistas. 6 ed.  Rio de Janeiro: Elsevier; 2011.De Rossi SS. Orofacial pain: A primer. Dent Clin North Am. 2013;57(3):383-92.Napeñas JJ. Intraoral pain disorders. Dent. Clin. North Am. 2013;57(3):429-47.Shivhare P, Singh U, Haidry N, Yadav H, Shankarnarayan G. Multilocular Radicular Cyst - A Common Pathology with uncommon radiological appearance. J Clin Diagn Res. 2016;10(03):13-5.Tijoe KC, NozuImada TS, Pardo, MP, Consolaro A, Gonçales ES. Large radicular cyst involving the maxillarys in us. Rev Assoc Paul Cir Dent. 2015;69(4):383-86.Rius JM, Llobet LB, Soler EL. The periodontium as a potential cause of orofacial pain:  a comprehensive review. Open Dent J. 2018;12:520-28.Regezi JA, Sciubba JJ. Patologia Bucal- Correlações Clinico patológicas. 3.ed. Rio de Janeiro: Guanabara Koogan; 2000.Ciulli E, Rocci M, Bollero R, Pandolfi C, Ottria L, Mampieri G et al. Maxillarycyst: descriptionof a clinical case. Oral Implantol (Rome). 2009;2(2):28-33.Brandini DA, Debortoli CV, Felipe Akabane ST, Poi WR, Amaral MF. Systematic review of the effects of excessive occlusal mechanical load on the periodont umofrats. Indian J Dent Res. 2018;29(6):812-19.Saravanan R, Babu PJ, Rajakumar P. Trauma from occlusion – an orthodontist's perspective. J Indian Soc Periodontol. 2010;14(2):144-45.Burgett FG, Ramfjord SP, Nissle RR, Morrison EC, Charbeneau TD Caffesse RG. A randomized trial of occlusal adjustment in the treatment of periodontitis patients. J Clin Periodontol. 1992;19(6):381-87.

Periapical cyst originates from an inflammatory reaction in the body that occurs due to a long-term endodontic aggression. It is more prevalent in caucasian male, during the third decade of life, in the anterior portion of the maxilla. They are commonly radiographic findings, due to their asymptomatic aspect. This study reports a Periapical Cyst in the portion corresponding to teeth 21, 22 and 23, which was treated by enucleation of the cyst, apicoectomy and retrograde root filling with Mineral trioxide aggregate (M.T.A) of teeth 21 and 22, filling of the cyst cavity with xenogeneic bone graft Gen-Ox and a collagen membrane Gen-Derm. Observations after three months show good and rapid bone regeneration, periodontal and periapical health of the teeth involved.

Objective: This research study aims at conducting an in vitro evaluation of crack formation in freshly extracted teeth after undergoing different storage and decontamination methods. Methods: 60 erupted upper third molars conventionally extracted using forceps # 210h (quinelato surgical instruments, rio claro - sp) and randomly distributed in three groups (n = 30): group 1 - storage in dry environment for 30 days, group 2 - sterilization in autoclave and storage for 30 days in distilled water, and group 3 - 10% formaldehyde decontamination for 14 days and storage in distilled water for additional 30 days. after the storage period, teeth had their roots transversely sectioned at 2, 4 and 6 mm below the root apex using a low rotation diamond disk under constant cooling. the evaluation of fragments was performed using a 30-time magnification microscope. Results: Cracks were seen only in group 1 and the chi-square statistical test with 5% significance level showed a statistically significant difference comparing the dry storage group to the others. Conclusion: The storage of extracted teeth in a dry environment influences the formation of dentinal defects.

Osteomyelitis is an inflammatory condition in the medullary spaces or the cortical surface of bones. It can be acute or chronic and extend beyond the original site. Also, it can be caused by several factors, among them as a result of untreated dental trauma. Correct diagnosis and individualized treatment are essential for success. The aim is to report a case of chronic osteomyelitis due to a history of dental trauma in the anterior region of the maxilla in a 21-years-old patient without associated comorbidities, focusing on the success of the therapy employed. It is known that the treatment of osteomyelitis is still a challenge because of the microbiota present. The treatment recommended with higher success rates is the removal of bone sequestration associated with antibiotic therapy, which has shown satisfactory results and maintenance of the dental elements in function.