RESUMO
OBJECTIVE: The accuracies of intraoral radiography (IOR), multidetector helical computerized tomography (MDHCT) at slice thicknesses 0.63 mm and 1.25 mm, and limited cone-beam computerized tomography (LCBCT) were compared for detection of horizontal tooth root fracture. STUDY DESIGN: In 7 beagle dogs, 28 maxillary anterior teeth were used, of which 13 had artificially induced horizontal root fracture. The specimens were examined by the above-mentioned 4 modalities. Diagnosis of root fracture was based on direct visualization of radiolucent line in each image by 6 radiologists. RESULTS: Sensitivity, negative predictive value, and diagnostic accuracy (true positives + true negatives) for detecting fracture lines in LCBCT (0.96 +/- 0.04, 0.97 +/- 0.03, 0.93 +/- 0.04, respectively) were significantly higher than MDHCT at 0.63 mm (0.76 +/- 0.09, 0.8 +/- 0.05, 0.8 +/- 0.05, respectively), MDHCT at 1.25 mm (0.49 +/- 0.09, 0.66 +/- 0.04, 0.69 +/- 0.05, respectively), and IOR (0.51 +/- 0.18, 0.67 +/- 0.08, 0.69 +/- 0.08, respectively). Specificity and positive predictive value showed no significant intermethod difference among the 4 modalities. CONCLUSION: Limited cone-beam CT is more useful than the other 3 radiographic modalities for diagnostic imaging of horizontal tooth root fracture.
Assuntos
Radiografia Dentária/métodos , Fraturas dos Dentes/diagnóstico por imagem , Raiz Dentária/lesões , Animais , Tomografia Computadorizada de Feixe Cônico , Cães , Sensibilidade e Especificidade , Tomografia Computadorizada Espiral , Raiz Dentária/diagnóstico por imagemRESUMO
PURPOSE: The purpose of this study was to construct questionnaires for the dental school setting from freely given patient answers with the aid of text mining, and to confirm the structure, reliability and validity of the questionnaires. METHODS: Using these questionnaires, we carried out a survey of the satisfaction of patients treated at the Dental Hospital of the Tsurumi University School of Dental Medicine. A total of 3394 patients participated in the study. To confirm the reliability of inter-item correlations and construct validity, factor analysis was carried out, and items belonging to each factor and Cronbach's alpha coefficients were calculated. RESULTS: Four factors were extracted and 64.0% of the variance was explained by these four factors. All correlation coefficients were >0.85. These four factors were: 'Treatment', 'Communication', 'Facilities' and 'Appearances'. From structural equation modelling, we determined that overall satisfaction was >0.75 and was statistically significant. CONCLUSION: The questionnaires used in this study are useful for measuring patient satisfaction in the dental school hospital setting.
Assuntos
Clínicas Odontológicas , Satisfação do Paciente , Inquéritos e Questionários , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Distribuição de Qui-Quadrado , Criança , Comunicação , Técnicas de Apoio para a Decisão , Relações Dentista-Paciente , Análise Fatorial , Feminino , Humanos , Japão , Funções Verossimilhança , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Faculdades de Odontologia , Estatísticas não ParamétricasRESUMO
Implant-supported restorations can restore function and esthetics provided that the implants are placed in the predetermined location and properly angulated. This article describes the fabrication of a diagnostic template incorporating a silicone radiopaque marker as a guide for achieving 3-dimensional evaluation of bone without artifacts using computed tomography. The diagnostic template may be easily transformed into a surgical template by removing the silicone marker.
