RESUMO
STATEMENT OF PROBLEM: Facial scanning systems have been developed as auxiliary tools for diagnosis and planning in dentistry. However, little is known about the trueness of these free software programs and apps for facial scanning. PURPOSE: The purpose of this in vitro study was to evaluate the trueness of 3D facial scanning by using Bellus3D and +ID ReCap Photo. MATERIAL AND METHODS: A mannequin head was used as the master model. The control group was created by scanning the mannequin head with a noncontact structured blue light 3D scanner (ATOS Core). Two facial scanning methods were used for the experimental groups: a facial scanning app (FaceApp) and the Plus identity photogrammetry methodology (ReCap Photo). In both methods, image capturing was performed under the same natural lighting conditions with a smartphone (iPhone X) calibrated with an app. Trueness was assessed from the 3D measurement error, which was calculated with a 3D mesh analysis software program (GOM Inspect). Two comparison groups were created: ATOS versus Bellus3D (B3D) and ATOS versus +ID with ReCap Photo (+IDRP). The results were statistically evaluated by using the Shapiro-Wilk and paired t tests (α=.05). RESULTS: B3D had a greater error than +IDRP in measuring the regions of the upper and lower lips, nose, and mentum (P<.01). This error was statistically higher for +IDRP (P<.01) in the right face area, but the left face area showed no statistically significant difference between the evaluated scanning methods (P=.93). The 3D global trueness of B3D was 0.34 ±0.14 mm, and that of +IDRP was 0.28 ±0.06 mm. CONCLUSIONS: Both methods evaluated in this study provided a 3D model of the face with clinically acceptable trueness and should be reliable tools for planning esthetic restorations.
Assuntos
Estética Dentária , Imageamento Tridimensional , Nariz , Lábio , Software , Desenho Assistido por Computador , Técnica de Moldagem OdontológicaRESUMO
Reconstruction of craniofacial defects following cancer surgery may be performed using several techniques and materials. This case report describes surgery for a large tumor, as well as the rehabilitation process which involved a craniofacial prosthesis covering the whole defect of the anterior brain, orbit, mid-face and hard palate. The results suggest that a craniofacial prosthesis anchored on titanium implants is a viable alternative as a retention system, and also a good alternative to other reconstructive surgeries.
RESUMO
A reabilitação de pacientes portadores de deformidades craniofaciais congênitas e/ou adquiridas tem sido, nos últimos anos, um grande desafio para as equipes multidisciplinares. Muitas técnicas de cirurgia reparadora e o uso de próteses extra-orais convencionais, têm sido empregadas, mas com resultados estéticos e funcionais que muitas vezes não satisfazem o paciente. O desenvolvimento de osseointegração, através dos implantes, proporciona uma nova alternativa na reabilitação facial para melhorar a qualidade de vidas destes pacientes.
Assuntos
Humanos , Osseointegração , Próteses e Implantes , Estética , Traumatismos Faciais , ReabilitaçãoRESUMO
As lesöes radiotransparentes da mandíbula e maxila podem apresentar aspectos radiológicos semelhantes, tais como localizaçäo, proximidade ou inclusäo dentária, caráter insuflante e densidade. Devido a tais semelhanças, estes sinais frequentemente näo säo suficientes para o diagnóstico. Entre essas lesöes, apresentamos cistos folículares, ameloblastomas, queratocistos, neurofibroma, carcinoma mucoepidermóide, lesäo de células gigantes e hemangioma, utilizando-se ortopantomografias, tomografias computadorizadas e, num caso específico, SPECT com hemácias marcadas na mandíbula. O objetivo deste trabalho é demonstrar as características radiológicas de algumas das lesöes radiotransparentes da maxila e mandíbula, de forma ilustrativa, cujo diagnóstico diferencial, às vezes, se torna muito difícil, mas que pode ser sugerido por intermédio de sinais que säo mais compatíveis com determinada lesäo
