Department of Prosthodontics, Dental Faculty of Ondokuz Mayis University, 55139, Samsun, Turkey.
Bosn J Basic Med Sci. 2009 Nov;9(4):296-300. doi: 10.17305/bjbms.2009.2782.
The purpose of this study was to investigate the effect of tooth supported (TSD) and tooth-tissue supported (TTSD) removable partial denture wearing on pulpal blood flow (PBF) of the abutment teeth by using Laser Doppler Flowmeter (LDF). Measurements were carried out on 60 teeth of 28 patients (28 teeth and 12 patients of TTSD group, 32 teeth and 16 patients of TSD group) who had not worn any type of removable partial dentures before, had no systemic problems and were non smokers. PBF values were recorded by LDF before insertion (day 0) and after insertion of dentures at day 1, day 7 and day 30. Statistical analysis was performed by student t test and covariance analyses of repeated measurements. In the group TTSD, the mean values of PBF decreased statistically significantly at day 1 after insertion when compared with PBF values before insertion (p<0,01). There was no statistically significant difference among PBF mean values on 1st, 7th and 30th day. However, in the group TSD, there was no statistically significant difference among PBF mean values before insertion and on 1st, 7th and 30th day. In other words, PBF mean values in group TSD continued without changing statistically significant on 1st, 7th and 30th day.TTSD wearing may show negative effect on the abutment teeth due to decreasing basal PBF.
本研究旨在通过激光多普勒流量仪（LDF）研究牙支持式（TSD）和牙-组织支持式（TTSD）可摘局部义齿佩戴对基牙牙髓血流（PBF）的影响。共纳入 28 名患者的 60 颗牙（TTSD 组 28 颗牙和 12 名患者，TSD 组 32 颗牙和 16 名患者），所有患者在佩戴义齿前均未佩戴过任何类型的可摘局部义齿，无系统疾病且不吸烟。通过 LDF 在义齿插入前（第 0 天）和插入后第 1、7 和 30 天记录 PBF 值。采用学生 t 检验和重复测量协方差分析进行统计学分析。在 TTSD 组中，与插入前的 PBF 值相比，插入后第 1 天的 PBF 平均值显著降低（p<0.01）。第 1、7 和 30 天的 PBF 平均值之间无统计学差异。然而，在 TSD 组中，插入前和第 1、7 和 30 天的 PBF 平均值之间无统计学差异。换句话说，在第 1、7 和 30 天，TSD 组的 PBF 平均值没有发生统计学上的显著变化。TTSD 佩戴可能会因基牙基础 PBF 降低而对基牙产生负面影响。
