Functional, Patient-Centered and Bone Remodeling Outcomes in Two Narrow-Diameter Implant Retained Mandibular Overdenture Wearers After 5 Years of Follow-Up: A Prospective Case Series

IF 5.3 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research Pub Date : 2025-07-11 DOI:10.1111/clr.14471

Anna Paula Da Rosa Possebon, Fernando Antônio Vargas Júnior, Fernanda Isabel Román Ramos, Otacílio Luiz Chagas-Júnior, Luciana de Rezende Pinto, Fernanda Faot

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Abstract

Objectives

This prospective longitudinal case series investigated changes in functional, radiographic, and patient-centered outcomes in users of two narrow-diameter implant-retained mandibular overdentures (IMO) over a 5-year follow-up.

Materials and Methods

Twenty-four patients from a previous 3-year study (8 man, 16 women, 71.58 ± 7.03 years, mean mandibular edentulism duration 23.9 ± 14.4 years) were invited for a 5-year follow-up evaluation of radiographic and functional parameters. Masticatory function (MF) was assessed using the Swallowing Threshold Test (ST), with X50 and B cut-off values indicating satisfactory performance. Oral health-related quality of life (OHRQoL) was evaluated using the OHIP-Edent questionnaire. The Posterior Mandibular Area Index (PAI) was analyzed using digital panoramic radiographs. Data was analyzed using multilevel mixed-effects linear regression.

Results

Twenty participants completed the 5-year follow-up evaluation. ST_X50 (4.00–3.70; p ≤ 0.01; 95% CI: 0.47–1.82) reached a significant reduction along with an increased number of masticatory cycles (59.33–65.60; p ≤ 0.01; 95% CI: 0.32–1.11) between years. The number of IMO wearers presenting satisfactory mastication increased but persisted as unsatisfactory in nine participants by year 5. Declines in the Functional Limitation and Physical Disability domains of OHRQoL were noted, with unsatisfactory mastication correlating with higher pain (coef: 2.5; p: 0.03; 95% CI: 0.25–4.74) and psychological disability scores (coef: 0.94; p ≤ 0.01; 95% CI: 0.19–1.68). PAI increased significantly (1.13–1.68; p ≤ 0.01; 95% CI: 0.24–0.56), indicating ongoing bone remodeling.

Conclusions

Although MF and bone parameters improved over 5 years, persistent unsatisfactory mastication continued to negatively affect quality of life. These findings underscore the interdependence between functional and patient-centered outcomes in IMO users.

Trial Registration

The Brazilian Registry of Clinical Trials (ReBEC), Trial identification: UTN code: U1111-1259-4127

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两名窄直径种植保留下颌覆盖义齿佩戴者5年随访后的功能、以患者为中心和骨重塑结果：一项前瞻性病例系列研究

目的：本前瞻性纵向病例系列研究了两个窄直径种植下颌覆盖义齿（IMO）使用者在5年随访期间功能、影像学和以患者为中心的结果的变化。材料与方法从先前3年的研究中选取24例患者（男性8例，女性16例，71.58±7.03岁，平均下颌义齿持续时间23.9±14.4年）进行5年的影像学和功能参数随访评估。吞咽阈值测试（ST）评估咀嚼功能（MF）， X50和B截断值表明表现满意。口腔健康相关生活质量（OHRQoL）采用OHIP -事件问卷进行评估。采用数字全景x线片分析后下颌面积指数（PAI）。数据分析采用多水平混合效应线性回归。结果20例患者完成了5年随访评估。ST_X50 (4.00 - -3.70;P≤0.01；95% CI: 0.47-1.82)随着咀嚼循环次数的增加(59.33-65.60；P≤0.01；95% CI: 0.32-1.11)。在第5年，表现出满意咀嚼的IMO佩戴者人数有所增加，但仍有9名参与者表现不满意。OHRQoL的功能限制和身体残疾领域的下降被注意到，咀嚼不满意与更高的疼痛相关(系数：2.5；p: 0.03;95% CI: 0.25-4.74)和心理残疾评分(coef: 0.94；P≤0.01；95% ci: 0.19-1.68)。PAI显著升高(1.13-1.68；P≤0.01；95% CI: 0.24-0.56)，表明正在进行骨重塑。结论虽然5年内MF和骨参数得到改善，但持续咀嚼不良仍对生活质量产生负面影响。这些发现强调了IMO使用者的功能和以患者为中心的结果之间的相互依赖性。试验注册巴西临床试验注册中心（ReBEC），试验标识：UTN代码：U1111‐1259‐4127

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来源期刊

Clinical Oral Implants Research 医学-工程：生物医学

CiteScore

7.70

自引率

11.60%

发文量

149

审稿时长

3 months

期刊介绍： Clinical Oral Implants Research conveys scientific progress in the field of implant dentistry and its related areas to clinicians, teachers and researchers concerned with the application of this information for the benefit of patients in need of oral implants. The journal addresses itself to clinicians, general practitioners, periodontists, oral and maxillofacial surgeons and prosthodontists, as well as to teachers, academicians and scholars involved in the education of professionals and in the scientific promotion of the field of implant dentistry.