بررسي نارسايي ها، عدم كارايي و انطباق دست دندانهاي متحرك كلاس I و II كندي ساخته شده جهت بيماران مراجعه كننده به دانشكده يا دندانپزشكي

An evaluation on insufficiencies, inefficiency and ill- fittness of R.P.D. Kennedy class I and II which have been made in the Prosthesis Ward of the Faculty for patients

Introduction: The objective of this study was assessing the insufficiencies, inefficiencies and ill-fittness of class, I,II partial dentures. Materials and Methods: In this study 100 patients including 89 females and 11 males, with R.P.D class I and II kennedy prepared in the faculty, were examined. Results: The following results were thereby obtained: 1- 26% of prostheses was for upper and 74% was for lower jaw. 2- 53% of prostheses were class I, and 47% class II. 3- 32% of the individuals had not even used their protheses for a week. 4- Type of clasp and rest place: 69% R.P.I., 4% R.P.A., 26% combination clasp, and 1% circumferential clasp. 5- Fitness of the total prostheses: 71%inappropriate and 29% appropriate. 6- Rocking 17% and ridge atrophy 11%. 7- Artificial teeth wear: 57% without wear, 35% low, and 8% high. 8- Coincidence between C.R. and C.O. 27%; V.D.O.: 43% normal, 20% short, 37% high. 9- Undercut and tilt in basic tooth: 74% with undercut and 26% without undercut; 15% destructive tilt. 10- Clasps status: 52% improper, and 48% proper. 11- Type of major connector and the percentage of its application: Ant-post. Bar 23% in upper jaw, Horse Shoe 3% in upper jaw, Lingual Plate 45% in lower jaw, Lingual Bar 29% in lower jaw. Conclusion: It was concluded that most insufficiencies were due to ill- fittness of the dentures (71Y ). ill- fittness of the frames were seen in 46% of the cases which was by itself the cause of ill-fittness of the base, recordings, and the V.D.O& C.O.