比较固定和可摘正畸保持器佩戴者的唾液微生物水平和牙周状况。

Comparative evaluation of salivary microbial levels and periodontal status of patients wearing fixed and removable orthodontic retainers.

机构信息

Department of Orthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey.

出版信息

Am J Orthod Dentofacial Orthop. 2019 Aug;156(2):186-192. doi: 10.1016/j.ajodo.2018.08.022.

DOI:10.1016/j.ajodo.2018.08.022

PMID:31375228

Abstract

INTRODUCTION

The purpose of this study was to compare and evaluate salivary microbial levels and periodontal status in patients using a fixed lingual retainer, a removable vacuum-formed retainer, or a Hawley retainer after orthodontic treatment with fixed appliances.

METHODS

Forty-five patients who finished their orthodontic treatment with fixed appliances and were about to start the retention phase were randomly divided into the following 3 groups of 15 individuals each: the fixed lingual retainer group, the vacuum-formed retainer group, and the Hawley retainer group. Periodontal measurements, such as the plaque index, gingival index, probing depth, and bleeding on probing, were obtained at the following 4 time points: at debonding (T0) and 1 week (T1), 5 weeks (T2), and 13 weeks (T3) after debonding. Saliva samples were collected 3 times in total: at T0, T2, and T3. A quantitative analysis for Streptococcus mutans and Lactobacillus casei was performed with the use of real-time polymerase chain reaction. The Kruskal-Wallis test and 1-way analysis of variance were used for the statistical comparisons of the groups.

RESULTS

No statistically significant difference in salivary S mutans and L casei levels was found among the 3 groups (P >0.05). They showed no statistically significant differences in plaque index, gingival index, bleeding on probing, and probing depth values (P >0.05). All periodontal parameters showed statistically significant decreases from T0 to T3 in all 3 groups (P <0.001). The S mutans and L casei levels were decreased significantly from T2 to T3 in the lingual retainer and Hawley retainer groups, whereas they decreased significantly from T0 to T3 in the vacuum-formed retainer group.

CONCLUSIONS

Fixed and removable orthodontic retainers do not differ in salivary S mutans and L casei levels and periodontal status. With all retainers, regardless of whether they are fixed or removable, oral hygiene improved after orthodontic treatment with fixed appliances.

摘要

简介

本研究旨在比较和评估使用固定舌侧保持器、可摘真空成型保持器或 Hawley 保持器的患者在正畸固定矫治器治疗后的唾液微生物水平和牙周状况。

方法

45 名完成正畸固定矫治器治疗且即将开始保持阶段的患者被随机分为以下 3 组，每组 15 人：固定舌侧保持器组、可摘真空成型保持器组和 Hawley 保持器组。在以下 4 个时间点测量牙周指标，如菌斑指数、牙龈指数、探诊深度和探诊出血：去粘结时（T0）和 1 周（T1）、5 周（T2）和 13 周（T3）后。共采集 3 次唾液样本：T0、T2 和 T3。使用实时聚合酶链反应对变形链球菌和干酪乳杆菌进行定量分析。采用 Kruskal-Wallis 检验和单因素方差分析对组间进行统计学比较。

结果

3 组间唾液中 S mutans 和 L casei 水平无统计学差异（P>0.05）。菌斑指数、牙龈指数、探诊出血和探诊深度值无统计学差异（P>0.05）。所有牙周参数在 3 组中均从 T0 到 T3 呈统计学显著下降（P<0.001）。在固定舌侧保持器组和 Hawley 保持器组中，从 T2 到 T3，S mutans 和 L casei 水平显著下降，而在可摘真空成型保持器组中，从 T0 到 T3 水平显著下降。