Ommerborn Michelle A, Schneider Christine, Giraki Maria, Schafer Ralf, Singh Preeti, Franz Matthias, Raab Wolfgang H M
Department of Operative and Preventive Dentistry and Endodontics, Heinrich-Heine University, Duesseldorf, Germany.
J Prosthet Dent. 2007 Aug;98(2):150-8. doi: 10.1016/S0022-3913(07)60048-1.
Occlusal load has frequently been suggested to be involved in the development of a noncarious cervical lesion (NCL). However, there is a lack of clinical studies evaluating NCLs and occlusal parameters in sleep bruxism (SB) subjects.
The purpose of this clinical study was to assess the frequency of NCLs and determine potential occlusal differences between SB subjects and healthy control subjects.
A total of 91 volunteers, 58 women and 33 men, with a mean (SD) age of 28.37 (4.89) years (range of 20 to 39 years), participated in this investigation. The clinical assessment of SB was based on the criteria of the American Academy of Sleep Medicine. The participants were divided into 2 groups; 58 subjects were assigned to the SB group and 33 subjects to the control group, following a thorough dental examination that was performed by a single trained dentist. Additionally, the following parameters were recorded: mean number of teeth present, existence/absence of NCLs, frequency of NCLs relating to the type of tooth, type of occlusal guidance scheme, existence of a slide from centric occlusion (CO) to maximum intercuspation (MI), length of the slide, and report of tooth hypersensitivity. Group differences were statistically analyzed using chi-square tests for the qualitative variables and Mann-Whitney U tests for the quantitative variables (alpha=.05).
NCLs were significantly more prevalent in SB subjects (39.7%) than in the control subjects (12.1%) (P=.006). In SB subjects, the first premolars were the teeth most affected, and in control subjects, the first molars were most affected. Tooth hypersensitivity was reported in 62.1% of the SB subjects and in 36.4% of the control subjects (P=.018). The evaluation of occlusal guidance schemes revealed no significant difference between the groups. In SB subjects (70.7%), a slide from CO to MI was significantly more prevalent than in control subjects (42.4%) (P=.008). Moreover, SB subjects demonstrated a significantly longer mean (SD) slide of 0.77 (0.69) mm compared to that of control subjects of 0.4 (0.57) mm (P=.008).
Within the limitations of this study, SB subjects demonstrated significantly more NCLs than the control group; whereas, the type of occlusal guidance scheme seems to be of minor importance in the development of NCLs.
咬合负荷常被认为与非龋性颈部病变（NCL）的发生有关。然而，缺乏对睡眠磨牙症（SB）患者的NCL和咬合参数进行评估的临床研究。
本临床研究的目的是评估NCL的发生率，并确定SB患者与健康对照者之间潜在的咬合差异。
共有91名志愿者参与了本研究，其中58名女性，33名男性，平均（标准差）年龄为28.37（4.89）岁（年龄范围为20至39岁）。SB的临床评估基于美国睡眠医学学会的标准。在由一名经过培训的牙医进行全面的牙科检查后，将参与者分为两组；58名受试者被分配到SB组，33名受试者被分配到对照组。此外，记录了以下参数：现存牙齿的平均数量、NCL的有无、与牙齿类型相关的NCL频率、咬合引导方案的类型、从正中咬合（CO）到最大牙尖交错位（MI）的滑动情况、滑动长度以及牙齿过敏的报告。使用卡方检验对定性变量进行组间差异的统计学分析，使用曼-惠特尼U检验对定量变量进行分析（α = 0.05）。
SB患者中NCL的发生率（39.7%）显著高于对照组（12.1%）（P = 0.006）。在SB患者中，第一前磨牙是受影响最严重的牙齿，而在对照组中，第一磨牙受影响最严重。62.1%的SB患者报告有牙齿过敏，而对照组中这一比例为36.4%（P = 0.018）。对咬合引导方案的评估显示两组之间无显著差异。在SB患者中（70.7%），从CO到MI的滑动比对照组（42.4%）更常见（P = 0.008）。此外，SB患者的平均（标准差）滑动长度为0.77（0.69）mm，显著长于对照组的0.4（0.57）mm（P = 0.008）。
在本研究的局限性内，SB患者的NCL明显多于对照组；而咬合引导方案的类型在NCL的发生中似乎不太重要。
Zotero 插件