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Full-Text Articles in Medicine and Health Sciences
Three-Dimensional Facial Morphological Changes From Adolescence To Adulthood In Caucasian And African American Populations, Matthew Davis
Three-Dimensional Facial Morphological Changes From Adolescence To Adulthood In Caucasian And African American Populations, Matthew Davis
All ETDs from UAB
The purpose of this cross sectional retrospective study was to use three dimensional surface imaging to determine gender dimorphism and facial morphological changes from adolescence to adulthood in African American and Caucasian populations. Materials and Methods: Three-dimensional images were captured using a laser scanner (Minolta Vivid VI900) and a stereophotogrammatic camera system (3dMDfaceTM). The total sample size included 371 subjects, including the following: 107 African-American adolescents 10–13 years of age, 100 African-American adults 19–30 years of age, 64 Caucasian adolescents 10–13 years of age, and 100 Caucasian adults 18–30 years of age. All subjects had normal body mass index, no …
Three-Dimensional Age-Related Changes Of The Adult Male Face, Catherine Haynie Haynie
Three-Dimensional Age-Related Changes Of The Adult Male Face, Catherine Haynie Haynie
All ETDs from UAB
Objectives: The adult population is a fast growing subgroup of orthodontic practices. The facial soft tissues of adults are different from adolescents, and there is significant sexual dimorphism in the aging of facial soft tissue. It is imperative for the orthodontist to understand how aging effects the soft tissues of the face, and to know how male and females differ in this process. The objectives of this study include: 1.) Identification of trends in facial aging among a Caucasian male and African American male sample utilizing three-dimensional surface imaging technology. 2.) Comparison of the aging effects between the Caucasian and …
Cleaning Protocol For Implant Abutment Screws, Rocio Barocio Torano
Cleaning Protocol For Implant Abutment Screws, Rocio Barocio Torano
All ETDs from UAB
Aim: To develop a time and cost effective cleaning protocol for implant abutment screws that are used throughout the fabrication of an implant restoration in the dental laboratory. Materials and Methods: Ninety (90) implant abutment screws (Biohorizons PXAS®) were collected from different dental laboratories after abutment milling and restoration fabrication. Seventy five (75) of these screws were randomly divided into 5 groups (n=15). Each group was cleaned for 1, 5, and 10 minutes in an ultrasonic cleaner and all screws were observed under 40x magnification before and after cleaning. Any debris was collected and weighed by using paper filters. The …
Capacity Of The 3m True Definition Scanner To Make Repeatable Impressions Depending On Placement Of Margins In Relation To Gingival Height., Ricardo Jose Galindo Ramirez
Capacity Of The 3m True Definition Scanner To Make Repeatable Impressions Depending On Placement Of Margins In Relation To Gingival Height., Ricardo Jose Galindo Ramirez
All ETDs from UAB
Purpose: To determine the precision and accuracy of the True Definition Scanner (3M) (TDS) to capture margins at different gingival heights. Materials and Methods: A typodont with soft gingiva and removable indexed Ivorine® teeth was used. Tooth #19 was prepared to fit an all-ceramic crown with a chamfer margin. Spacers placed beneath the prepared tooth elevated #19 in the typodont and controlled the tooth margin height relative to the gingival margin. The TDS was used as an intraoral scanner. A total of 50 scans were made with 5 groups of 10 scans each. In Group 1 (control) the prepared tooth …