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A odontodisplasia regional é uma anomalia dentária, pouco comum, não hereditária e com uma etiologia ainda desconhecida. Os tecidos afetados são o esmalte e a dentina, são acometidos nos dentes decíduos e, as vezes na dentição permanente de um mesmo indivíduo. Esta lesão pode ser confundida com outras lesões como por exemplo o odontoma ou dentes com outro tipo de anomalia. O objetivo é relatar um caso de odontodisplasia regional na dentição decídua e permanente de uma criança, assim como apresentar as diferentes ferramentas diagnósticas. Os dentes acometidos mostravam-se ao exame clínico, como dentes hipoplásicos com coloração amarelo amarronzado. Uma radiografia panorâmica e radiografias periapicais, assim como uma biopsia excisional, foram essenciais para obter um diagnóstico correto, e assim poder oferecer uma adequada conduta para a preservação e previsibilidade dos diferentes tipos de tratamentos reabilitadores odontológicos que essa criança poderia ter nos próximos anos até a idade adulta.

Objetivo: Relatar dois casos de Sinusite Maxilar Odontogênica (SMO), diagnosticados exclusivamente por Tomografia Computadorizada de Feixe Cônico (TCFC). Relato de Caso 1: Mulher, 48 anos de idade, referiu dor difusa em face e primeiro molar superior esquerdo (PMSE) com lesão cariosa. A radiografia panorâmica mostrou uma lesão periapical bem delimitada na região do PMSE e opacificação do seio maxilar esquerdo (OSME). Apenas na TCFC houve relação entre a lesão periapical do PMSE e o seio maxilar através da ruptura cortical do assoalho do seio maxilar, espessando a mucosa do seio maxilar (EMSM). A SMO foi diagnosticada como um cisto periapical envolvendo o PMSE. Ela foi encaminhada para tratamento endodôntico. Relato de Caso 2: Homem de 33 anos referiu dor difusa na face e no primeiro molar superior direito (PMSD). A radiografia panorâmica mostrou uma rarefação óssea sem limites e perda óssea vertical ao redor das raízes da PMSD. A TCFC mostrou as mesmas características do Caso 1. Devido o grande EMSM, foi feito um diagnóstico diferencial entre a doença periodontal e o tumor do seio maxilar. O diagnóstico de SMO e doença periodontal foi feito. O seio maxilar foi a cirurgia explorada através da comunicação oral da extração dentária e da comunicação remanescente. Conclusão: A TCFC proporcionou detalhes do foco infeccioso odontogênico, comprometimento do osso alveolar e seio maxilar, assim como uma melhor visualização anatômica entre os dentes afetados e o seio maxilar, os quais não foram observados nas imagens radiográficas 2D.

Objetivo: avaliar a eficácia do levantamento do seio maxilar atraumático sem enxerto ósseo e a taxa de sobrevivência da instalação de implantes imediatos. Material e métodos: realizou-se uma estratégia de buscanas bases de dados Pubmed, Web of Science e Science Direct, obtendo 103 artigos, sendo selecionados 07estudos publicados entre 2008 até 2019. Resultados: foram registrados 576 pacientes com idades entre 19e 85 anos de idade, de ambos os sexos e 1,113 implantes instalados. Verificou-se uma taxa de sucesso esobrevivência dos implantes de 96,6%, após um seguimento de 1 a 3 anos e houve um ganho ósseo de aproximadamente 3mm. Considerações finais: o levantamento de seio maxilar atraumático sem enxerto ósseo é eficaz para reabilitação de áreas edêntulas e mostra um bom resultado ao longo do tempo, com uma taxa média de sobrevivência dos implantes de 96,3%. Ainda faltam estudos para determinar qual tipo de implante é melhor para este tipo de técnica.

Objective To determine how the diagnosis may or may not be influenced by cone-beam computed tomography (CBCT), comparing the diagnostic hypotheses obtained using images of panoramic radiographs and CBCT in cases of ameloblastoma, odontogenic keratocyst, and dentigerous cyst. Study design Five cases were selected for each lesion. Panoramic radiographs and CBCT scans were analyzed by 15 dentists for the formulation of the diagnostic hypotheses. Two observers performed the analyses and measurement of qualitative and quantitative features of the lesions evaluated in the CBCT. Results There was no statistically significant difference in correct diagnostic average between panoramic radiography and CBCT, but there was a significant difference in correct diagnostic average in the diagnosis of ameloblastoma using CBCT compared to panoramic radiography. Master's and PhD-level observers had greater correct diagnostic average in the diagnosis of odontogenic keratocyst using panoramic radiograph compared to specialists, with a significant difference. Conclusion Cone-beam computed tomography images revealed that the ameloblastomas were greater in size and expansion compared to the odontogenic keratocyst and the dentigerous cysts. Ameloblastomas showed a higher incidence of multiloculated aspects compared to odontogenic keratocyst and dentigerous cysts. There were no differences between quantitative and qualitative features of odontogenic keratocyst and dentigerous cysts.

Quando interpretamos imagens, devemos conhecer os diferentes grupos de lesoes radiopacas, radiolucida e mistas. Dentre as imagens radiopacas mais comuns, que podem ser vistas nas radiografias panorâmicas, podemos citar a osteoesclerose. O objetivo deste estudo foi avaliar a presenca de osteosclerose em radiografias panorâmicas, classificando-as conforme genero e localizacao. E caracterizada como areas de trabeculado osseo denso, devido, de etiologia variada que inclui maior demanda funcional de uma determinada regiao. De formato variado a imagem pode ser oval, eliptica ou irregular, localizadas no apice radicular, entre as raizes ou em areas distantes das raizes dentarias, majoritariamente na regiao de pre-molares e molares. Neste estudo interpretamos 550 imagens panorâmicas pertencentes ao Departamento de Estomatologia (Disciplina de Radiologia) da Faculdade de Odontologia de Bauru FOB - USP, com melhor qualidade de imagem. Encontramos 57 (10,4%) imagens compativeis com osteoesclerose. Das 57 imagens, 54 (94,7%), eram unilaterais, e apenas 3 apresentavam lesoes bilaterais, localizadas na mandibula. Todas as areas de osteoesclerose foram encontradas na mandibula e a ocorrencia maior na regiao de molares (54,4%), sendo 20 na regiao apical, 16 na area interradicular e 21 em area edentula. Na regiao de incisivos e caninos (10,5%) e na regiao de pre-molares (35%). Foi possivel constatar que e mais frequente em mulheres e estava presente principalmente em radiografas de pacientes com media de idade de 28,8 anos.

The aim of this study was to identify the shape and route of the bony canal of the posterior superior alveolar artery (PSAA) and posterior superior alveolar nerve (PSAN) using different identification methods, including computed tomography (CT), panoramic radiograph, and macroscopic evaluation (corpse and dry skull). Twenty-four patients were analyzed by CT and panoramic and posterior anterior (PA) radiographs; additionally, 90 dry skulls and 21 dissected anatomical specimens were examined. Three-dimensional-CT revealed that the lateral wall of the maxillary sinus resembled a tunnel format in 60% of the treated patients. Out of all 24 patients, the panoramic radiograph identified the bony canal in only one patient; whereas the PA radiograph identified it in 80% of the patients. The dry skulls showed tunnellike routes of the PSAA and PSAN in 65% of the cases. Moreover, the pathway was also visibly observed in the dissected anatomical specimens as a straight shape in 85% of the cases. Thus, our results demonstrated that the most common shape of the bony canal of the PSAA and PSAN is the tunnel format with a straight route by 3D-CT, posterior anterior radiography, and macroscopic evaluation. However, in the panoramic radiographs, it was difficult to identify this canal.

Objectives: This study investigated the association of congenital cervical vertebrae anomalies (CVA) with the prevalence of cleft lip and palate (CLP) specifying the most frequent associations. Methods: A meta-analysis was based on the Preferred Reporting Items of Systematic reviews and Meta-Analyses guideline. A search of the PubMed, Embase, Web of Science, Science Direct, Scopus and Lilacs database was performed until March 2018. Clinical studies that evaluated CVA in individuals with CLP (experimental group) and without CLP (control group) was included. For the statistical analysis, the software Comprehensive Meta-Analysis (Biostat; Englewood, NJ) was used, with a p-value < 0.05 considered significant. Results: A total of 10 articles were included, for a total of 2566 individuals with CLP and 2301 individuals without CLP. The meta-analysis indicated statistically significant differences and the group of individuals with CLP had an increased number of CVA when compared to the group of individuals without CLP (p < 0.05; 95% confidence interval, 2.41–6.11; heterogeneity: Q-value 32.8, I2 72.6%). Conclusions: This study indicated that CVA are associated with the presence of CLP. Among the patients with CVA the most frequent anomalies were the deficiency of the posterior arch, followed by the fusion of cervical vertebrae. Individuals with cleft palate and those with unilateral cleft lip and palateCLP had an increased prevalence of CVA.

OBJECTIVE: To evaluate the influence of rotation degree and field of view (FOV) size on the amount of artefacts produced in cone beam CT (CBCT) images. METHODS: A cylindrical wax utility phantom, with a metallic sample in its interior, was scanned with two FOV sizes (100 x 100 and 40 x 40 mm) and in full (360°) and partial (~180°) rotations. After the acquisitions, images were objectively assessed in the ImageJ software, obtaining the standard deviation in areas around the metal sample. The influence of artefacts produced by the several FOVs and rotation degrees was compared by two-way analysis of variance (α = 0.05). RESULTS: The images obtained with a large FOV presented a higher amount of noise compared to a restricted FOV, both for partial (p = 0.0037) and full (p = 0.0023) rotation degrees. For images obtained with a restricted FOV, full rotation resulted in images with less noise (p = 0.0259). For images obtained with large FOV, there was no statistically significant difference (p = 0.1494) in noise for both rotation protocols. CONCLUSIONS: As there were no significant differences in the amount of artefacts in rotation protocols for large FOVs, the partial rotation can be indicated due to its lower exposure to radiation. For acquiring images with restricted FOVs, the full rotation is recommended.

Purpose: Genial tubercles (GTs) are bony protuberances on the lingual aspect of the mandible symphysis, where genioglossus and geniohyoid muscles are inserted. In the literature, few papers report their real dimensions. Cleft lip and palate are craniofacial anomalies involving the maxilla, but the anatomical structures of the mandible can be altered when these have associated with the cleft, some syndrome. This study aimed to evaluate the GTs of 30 individuals and to make their measurements in cone beam computed tomography examinations. Methods: A sample of 30 individuals, 19 of them with cleft lip and palate, 6 individuals with Treacher Collins syndrome (TCS), and 5 individuals with Pierre Robin sequence, was used. The GTs were evaluated about the amount and the following measurements were performed: A—distance from the apex of the central incisors to GT, B—mandibular thickness in the region of GT, C—GT height, D—GT width, and E—distance from inferior border of mandible to GT. Results: The individuals presented since the absence of GTs to 3. The TCS group had the highest average of the measurements A, D, and E with statistical difference (P = 0.006) (P = 0.011) and (P = 0.017), respectively. The Pierre Robin sequence group had the highest average measurement of B and C, but there was no statistical difference. Conclusions: The difference in the measurements can be explained perhaps because individuals with TCS have glossoptosis and changes on retrognathic mandible, which would affect the position of the GT.

Sturge-Weber syndrome is a nonhereditary congenital condition characterized by leptomeningeal and facial skin angiomatous malformation following the trigeminal nerve path. The intraoral angiomatosis are presented in 40% of cases and results in an important periodontal alteration, increasing the risk of bleeding during dental procedures. A 43-year-old male patient presented with port wine stain on the right side of the face, the entire hard and soft palates, the alveolar ridge, and buccal mucosa, and had an excessive accumulation of calcified masses in both supragingival and subgingival sites, with swelling and generalized inflammation throughout the gingiva and alveolar mucosa. He reported not having sanitized the area for years for fear of bleeding. Periodontal management, to remove calculus and to control gingivitis initiated in the supragingival region and gradually reaching the subgingival region to control oral microbiota, was performed with mild bleeding. The redness of the staining greatly diminished with time and the extreme halitosis of the patient also improved sharply leading to a dramatic improvement in quality of life. Ambulatory care is a feasible alternative for periodontal management that within safety limits for bleeding risks reduces the operational cost.

We report two cases in which cone beam computed tomography (CBCT) was essential for the establishment of the diagnosis of periapical lesions. CBCT allows a three-dimensional assessment of a specific region with no superimposition of structures. Therefore, its use is recommended when radiographic images are not sufficient for the diagnosis.

The aim of this study was to identify the type and frequency of incidental findings (IFs) in the maxillofacial region of CBCT scans with different sizes of field of view (FOV), and the clinical relevance of the findings was classified as requirement or not of monitoring, treatment or referral to a specialist.We analyzed 150 CBCT examinations, divided according to the size of the FOV into 3 groups: 6-cm maxilla, 6-cm mandible and 13-cm maxilla/mandible. The IFs were categorized into six areas: airway, temporomandibular joint (TMJ), bone, lesions of the jaws, teeth and soft-tissue calcifications.The results showed 560 IFs that were found in 92% of the samples studied. A total of 225 IFs were found in examinations of the maxilla group, 99 findings in the mandible group and 236 findings in the maxilla/mandible group. The IFs were most frequent in the tooth zone (27.32%), followed by airways, soft-tissue calcifications, TMJ, bone, lesions of the jaw and other findings. We also found that 43.46% of the IFs did not need treatment or referral to another professional, 28.97% findings required the acquisition of new images for monitoring and 27.55% findings needed treatment or referral.The present study confirmed the high frequency of IFs in CBCT scans. It was concluded that it is necessary to interpret and report the total volume obtained in CBCT examinations and not only the purpose of the examination region.

Objetivo: realizar uma reflexão sobre a aplicação dos princípios bioéticos na atuação do cirurgião-dentista em âmbito hospitalar. Material e Métodos: uma revisão crítica da literatura foi realizada acessando-se as bases de dados PubMed, Scielo e Biblioteca Virtual em Saúde, utilizando-se os descritores “Bioética”, “Equipe Hospitalar de Odontologia”, “Ética Odontológica” e “Ética Institucional”. Resultados: não foram encontrados estudos específicos sobre o tema proposto. Há escassez de trabalhos na literatura científica específicos sobre a aplicação dos princípios bioéticos ao dia a dia dos profissionais de Odontologia em âmbito hospitalar. Conclusão: a observância e o respeito aos pilares bioéticos da autonomia, justiça, beneficência e não maleficência devem estar incluídos nas atitudes do cirurgião-dentista e da equipe multiprofissional, minimizando os desconfortos ocasionados por problemas de ordem geral e bucal.

The aim of this study was to evaluate the performances of observers in diagnosing proximal caries in digital images obtained from digital bitewing radiographs using two scanners and four digital cameras in Joint Photographic Experts Group (JPEG) and tagged image file format (TIFF) files, and comparing them with the original conventional radiographs.In total, 56 extracted teeth were radiographed with Kodak Insight film (Eastman Kodak, Rochester, NY) in a Kaycor Yoshida X-ray device (Kaycor X-707; Yoshida Dental Manufacturing Co., Tokyo, Japan) operating at 70 kV and 7 mA with an exposure time of 0.40 s. The radiographs were obtained and scanned by CanonScan D646U (Canon USA Inc., Newport News, VA) and Genius ColorPage HR7X (KYE Systems Corp. America, Doral, FL) scanners, and by Canon Powershot G2 (Canon USA Inc.), Canon RebelXT (Canon USA Inc.), Nikon Coolpix 8700 (Nikon Inc., Melville, NY), and Nikon D70s (Nikon Inc.) digital cameras in JPEG and TIFF formats. Three observers evaluated the images. The teeth were then observed under the microscope in polarized light for the verification of the presence and depth of the carious lesions.The probability of no diagnosis ranged from 1.34% (Insight film) to 52.83% (CanonScan/JPEG). The sensitivity ranged from 0.24 (Canon RebelXT/JPEG) to 0.53 (Insight film), the specificity ranged from 0.93 (Nikon Coolpix/JPEG, Canon Powershot/TIFF, Canon RebelXT/JPEG and TIFF) to 0.97 (CanonScan/TIFF and JPEG) and the accuracy ranged from 0.82 (Canon RebelXT/JPEG) to 0.91 (CanonScan/JPEG).The carious lesion diagnosis did not change in either of the file formats (JPEG and TIFF) in which the images were saved for any of the equipment used. Only the CanonScan scanner did not have adequate performance in radiography digitalization for caries diagnosis and it is not recommended for this purpose.

Objective: Panoramic radiographs are routinely employed for surgical planning of unerupted third molars. The objective of this study was to evaluate distortions in the position of mandibular third molars on panoramic radiographs. Material and methods: Panoramic radiographs of 14 patients with indication for extraction of the mandibular third molars were used. Transurgical impressions of the crowns of the teeth to be extracted and adjacent second molars (n=19) were achieved with addition silicone and poured with type IV plaster for comparison of the inclinations of the third molars on the radiographs and study casts. Results: There was a mean difference of −5.37° between the position of the third molar on the panoramic radiograph and on the study cast (standard deviation 1.46, P

Benign osteoblastoma is a bone tumour that seldom occurs in the facial bones. The objective of this article is to add one more case of this rare lesion to the academic literature and to provide a systematic review of previously published cases. A new case of benign osteoblastoma is presented and clinical, radiographic and microscopic aspects, as well as differential diagnosis, treatment and follow-up are discussed. The importance of the correct diagnosis of this type of lesion is stressed, since it presents a clinical, radiographic and microscopic similarity to other bone lesions, including malignant tumours, which may lead the professional into conducting the case in an improper manner.

ObjectivesThe aim of this study was to determine the prevalence of apical periodontitis (AP) detected in cone beam CT (CBCT) images from a database.MethodsCBCT images of 300 Brazilian patients were assessed. AP images were measured in three dimensions. Age, gender, number and location of total teeth in each patient were considered. AP location was considered according to tooth groups. The extent of AP was determined by the largest diameter in any of the three dimensions. Percentages and the χ2 test were used for statistical analysis.ResultsAP was found in 51.4% of the patients and in 3.4% of the teeth. Higher prevalence of AP was found in 60- to 69-year-olds (73.1%) and in mandibular molars (5.9%) (p < 0.05). Inadequate endodontic treatment presented higher prevalence of AP (78.1%).ConclusionsAP can be frequently found in CBCT examinations. The presence of AP has a significant association with patients' age, and tooth type and condition. CBCT databases are useful for cross-sectional studies about AP preva...