ABSTRACT
Objective @#To measure and compare condyle-related indexes(volume, surface area, anterior space, upper space and posterior space) in adult female patients with different sagittal malocclusions with the aim of providing a reference for clinical treatment. @*Methods @#The CBCT database of Qingdao Stomatology Hospital was searched to identify patients with high-angle adult skeletal malformations with the following classifications: classⅠ(n=30), class Ⅱ(n=30), and class Ⅲ(n=30). The CBCT images associated with the sample population were stored according to DICOM3.0 medical digital image communication standards. Mimics10.01 software was used to read and prepare three-dimensional reconstructions of the condylar, and the above-listed indicators were measured and statistically analyzed. @*Results @# There were no significant differences between the right and left sides among the three groups (P > 0.05). For parameters including condylar anterior joint space and post-joint space, the differences among the three groups were significant (P < 0.05). There was no significant difference in parameters related to condylar articular space between classⅠand class Ⅱ(P > 0.05). The differences between skeletal classesⅠand Ⅲ and between skeletal ClassesⅡ, and Ⅲ were statistically significant (P < 0.05). @*Conclusion@#Condylar position varies among high-angle adult woman with skeletal malocclusions with different sagittal skeletal patterns.
ABSTRACT
Objective @#To explore the therapeutic efficacy of chairside CEREC all-ceramic restorations in children with first permanent molars with severe defects and to summarize the clinical methods and procedures.@*Methods@# Forty teeth of 7-15 years old thirty-four children with first permanent molars with severe defects were selected. After careful tooth preparation, a total of 40 all-ceramic restorations (8 inlays, 32 onlays) were designed and manufactured using the CEREC 3D system, and all prostheses were bonded with composite resin cement. Immediately after treatment and after 24 months, the subjective satisfaction of the patients was assessed. The clinical efficacy was analyzed using modified USPHS criteria at 12 months and 24 months. Evaluations included secondary caries, marginal adaptation, surface texture, color matching, fracture, anatomical form, adjacency relationship and gingival health.@*Results @# For the 40 all-ceramic restorations of the first permanent molars, after 24 months, 100% of the teeth were grade A for secondary caries, surface texture and fracture of the prosthesis, and 85% of the teeth were up to grade A for the other indexes at 12 and 24 months. There were no significant differences (P > 0.05) between 12 months and 24 months. Immediately after treatment and after 24 months, the subjective satisfaction of the patients was greater than 94%. @*Conclusion @#Application of the CEREC 3D system had a clear curative effect and resulted in high satisfaction in the repair of permanent molars with severe defects in children.