Limpuangthip Nareudee, Tumrasvin Wacharasak, Pinyowattanasilp Thanyaluck, Kulpiyavaja Paweena
Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
Private dental clinics, Bangkok, Thailand.
J Prosthodont Res. 2023 Apr 12;67(2):214-221. doi: 10.2186/jpr.JPR_D_22_00004. Epub 2022 Jul 5.
To determine the effect of a dynamic impression lining material (DIL) on the retention and stability of mandibular complete dentures (LCD), masticatory performance, and the oral health-related quality of life (OHRQoL) of the patients wearing complete denture (CD) compared with those wearing a denture with conventional hard denture liner (HL).
Twenty-five patients who wore CD with an ill-fitting LCD were randomly assigned to two groups: LCD relined with DIL (Dynamic impression lining material) or HL (Tokuyama® Rebase II (fast)). Three objective measures (denture retention, stability, and masticatory performance) were measured. The OHRQoL was also measured using the Thai version of oral impacts on daily performance. Outcomes were measured at six time points: baseline, 3 days, 1 week, 1 month, 3 months, and 6 months after relining. Outcome changes were analyzed using a generalized estimating equation, and all models were adjusted for age, mandibular ridge form, and CD age at a 5% significance level.
After LCD relining, the frequency and severity of adverse oral impacts significantly decreased. In the DIL group, denture pain occurred on and off over six months, and an ill-fitting denture impacted at one month. In the HL group, denture pain continuously decreased over time. At 3 months, changes in the clinical properties of DIL were observed, including perceived odor. The material also peel-off from the denture base, and plaque accumulation was observed. In contrast, the HL properties remained stable for over 6 months.
Although DIL improves denture retention and stability, masticatory performance, and the OHRQoL of the patients who wear CD, oral adverse effects were not eliminated. The clinical properties of DILs changed at 3 months, while the HL remained relatively stable for up to 6 months.(The clinical trial registration number: Thai Clinical Trials Registry (TCTR) number TCTR20210625005.).
与佩戴带有传统硬质义齿衬垫（HL）的假牙患者相比，确定动态印模衬垫材料（DIL）对下颌全口义齿（LCD）的固位和稳定性、咀嚼性能以及佩戴全口义齿（CD）患者的口腔健康相关生活质量（OHRQoL）的影响。
25名佩戴不合适LCD的CD患者被随机分为两组：用DIL（动态印模衬垫材料）重衬的LCD组或HL（德山®重衬II（快速型））组。测量了三项客观指标（义齿固位、稳定性和咀嚼性能）。还使用泰国版的日常口腔功能影响量表测量了OHRQoL。在重衬后的六个时间点进行测量：基线、3天、1周、1个月、3个月和6个月。使用广义估计方程分析结果变化，所有模型均在5%的显著性水平上根据年龄、下颌牙槽嵴形态和CD使用年限进行了调整。
LCD重衬后，不良口腔影响的频率和严重程度显著降低。在DIL组中，义齿疼痛在六个月内断断续续出现，在一个月时出现义齿不合适的情况。在HL组中，义齿疼痛随时间持续减轻。在3个月时，观察到DIL临床性能的变化，包括可感知的气味。材料也从义齿基托上脱落，并观察到菌斑积聚。相比之下，HL的性能在6个月以上保持稳定。
尽管DIL改善了佩戴CD患者的义齿固位和稳定性、咀嚼性能以及OHRQoL，但口腔不良反应并未消除。DIL的临床性能在3个月时发生了变化，而HL在长达6个月的时间内保持相对稳定。（临床试验注册号：泰国临床试验注册中心（TCTR）编号TCTR20210625005。）
