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Axial wall convergence of full veneer crown preparations. Documented for dental students and general practitioners. 1996

A Annerstedt, and U Engström, and A Hansson, and T Jansson, and S Karlsson, and H Liljhagen, and E Lindquist, and E Rydhammar, and M Tyreman-Bandhede, and P Svensson, and U Wandel
Department of Prosthetic Dentistry, Faculty of Odontology, Göteborg University, Sweden.

The convergence angle in 478 full crown preparations was assessed. Of these preparations, 351 had been performed by general practitioners and 127 by dental students. Groups of preparations performed on incisors, premolars, and molars were compared, as were preparations performed by dentists and students. Two different convergence angles were measured for each tooth, buccolingually and mesiodistally. The results showed a mean angle of 21 degrees. The mean values for premolars and molars differed significantly. When a comparison was made of preparations performed by students, a significant difference was found between premolars and molars. The same comparison for general practitioners showed a significant difference both for incisors compared with molars and for premolars compared with molars. A wide range was found for the convergence of the axial walls, especially for the preparations performed by general practitioners.

UI MeSH Term Description Entries
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D002983 Clinical Competence The capability to perform acceptably those duties directly related to patient care. Clinical Skills,Competence, Clinical,Clinical Competency,Clinical Skill,Competency, Clinical,Skill, Clinical,Skills, Clinical,Clinical Competencies,Competencies, Clinical
D003442 Crowns A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin. Dental Crowns,Crown, Dental,Crowns, Dental,Dental Crown,Crown
D005792 General Practice, Dental Nonspecialized dental practice which is concerned with providing primary and continuing dental care. Dental General Practice,Dental General Practices,General Practices, Dental,Practice, Dental General,Practices, Dental General
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000044 Dental Abutments Natural teeth or teeth roots used as anchorage for a fixed or removable denture or other prosthesis (such as an implant) serving the same purpose. Abutments, Dental,Abutment, Dental,Dental Abutment
D013335 Students, Dental Individuals enrolled a school of dentistry or a formal educational program in leading to a degree in dentistry. Dental Student,Dental Students,Student, Dental
D017755 Prosthesis Fitting The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed) Prosthesis Adjustment,Adjustment, Prosthesis,Adjustments, Prosthesis,Fitting, Prosthesis,Fittings, Prosthesis,Prosthesis Adjustments,Prosthesis Fittings

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