| Autor: |
William A. Brantley, Ahmed A.A Fathalah, Declan A Byrne, Osama Omer, Frank Houston, Noel Claffey |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Journal of Dental Health, Oral Disorders & Therapy. 6 |
| ISSN: |
2373-4345 |
| DOI: |
10.15406/jdhodt.2017.06.00215 |
| Popis: |
Statement of problem Loss of retention of implant overdenture stud attachment assemblies presents maintenance problems to both the patient and dentist Purpose The purpose of this in vitro study was to investigate effects of repeated separation and reunion cycles on retention of paired overdenture stud attachment assemblies set in acrylic resin Material and methods Ten pairsof stud attachments were set vertically and parallel to each other Group Ten other pairs of stud attachments were set with one vertical and the other at a vertical angle of deg so that it converged on the first implant Group Baseline measurements of separation force were made for each of the ten paired attachment assemblies in the two groups Each assembly was first subjected to a cycle of separations and reunions followed by measurement of separation force Then additional cycles were carried out for a total of separations and reunions with measurement of separation force and retightening after each cycle Repeated values ANOVA was employed to compare the two groups at the different time intervals with p lt representing statistical significance Results While significant p lt decay in the resistance to separation was observed forboth the parallel and converging groups of paired stud attachment assemblies these decreases were judged to have little clinical importance Conclusion There was no clinically meaningful difference in retention between the first group of two parallel stud attachments and the second group with one attachment converging at an angle of deg Group showed greater retention than Group after the retightening adjustments |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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