Circulating test and analysis of clasp retention / 中华口腔医学杂志
Chinese Journal of Stomatology
;
(12): 420-422, 2003.
Artículo
en Chino
| WPRIM
| ID: wpr-253684
ABSTRACT
<p><b>OBJECTIVE</b>To show the trend of the retention change during the circulation of the clasp dislodging and inserting, and to discuss the proper depth of the undercut for a specific clasp. It is also a basic study for the best designing of RPD.</p><p><b>METHODS</b>The Chatillon force measuring instrument was used to record the variation of the retention of Co-Cr alloy casting Akers clasp when they were dislodging from undercuts of different depths (0.25 mm, 0.50 mm, 0.75 mm) on bicuspid and molar.</p><p><b>RESULTS</b>The data was analysed of Correlation and Regression by SPSS 10.0 statistic software. The variations of the retention in the circulation are obvious from the different teeth and different undercut depths. It shows an attenuation trend in circulation (P < 0.01). After 400 times dislodging, in bicuspid group, the retention of the clasp used in 0.50 mm undercut became less than the one used in 0.25 mm undercut. While the retention of the clasp used in 0.75 mm decreases most obviously, it values 0.7670 kg. In molar group, the attenuations of the retention at different depths of undercut are similar, the retentions of the clasp still rank as, from great to less, 0.75 mm, 0.50 mm and 0.25 mm, in the depth of undercut.</p><p><b>CONCLUSION</b>the proper depth of the undercut for bicuspid is 0.25 mm, and 0.50 mm for molar.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Abrazadera Dental
/
Retención de Prótesis Dentales
Límite:
Humanos
Idioma:
Chino
Revista:
Chinese Journal of Stomatology
Año:
2003
Tipo del documento:
Artículo
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