Related Experiment Video
Updated: Jun 23, 2026
08:47
Mimicking and Measuring Occlusal Erosive Tooth Wear with the "Rub&Roll" and Non-contact Profilometry
Published on: February 2, 2018
12.6K
Mandibular Atrophy and Its Impact on Overdenture Performance: Insights From a 5-Year Longitudinal Study.
Fernanda Faot1, Luciana De Rezende Pinto1, Lucas Jardim Da Silva2
1Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, RS, Brazil.
Journal of Oral Rehabilitation
|November 26, 2025
Summary
Mandibular atrophy negatively impacts chewing function and satisfaction in patients with implant-retained overdentures. This condition also increases the need for specific prosthetic maintenance over five years.
Area of Science:
- Dentistry
- Prosthodontics
- Oral Implantology
Background:
- Mandibular atrophy's long-term effects on masticatory function and patient outcomes with implant-retained overdentures are not well understood.
- Assessing these impacts is crucial for improving treatment strategies and patient care.
Purpose of the Study:
- To evaluate the five-year impact of mandibular bone atrophy on masticatory performance, quality of life, patient satisfaction, and prosthetic maintenance.
- To compare outcomes between patients with atrophic mandibles (AM) and non-atrophic mandibles (NAM) rehabilitated with implant-retained overdentures.
Main Methods:
- Twenty-four edentulous patients received mandibular overdentures supported by two narrow-diameter implants.
- Patients were grouped into atrophic mandible (AM) and non-atrophic mandible (NAM) based on bone height.
- Masticatory performance, swallowing threshold, quality of life (DIDL questionnaire), and prosthetic maintenance were assessed over five years.
Main Results:
- The atrophic mandible (AM) group showed significant declines in masticatory performance and altered swallowing thresholds.
- Patients in the AM group reported significantly lower satisfaction with eating and chewing functions.
- While overall prosthetic maintenance didn't differ, the AM group had more frequent dislodgement and attachment replacements.
Conclusions:
- Mandibular atrophy significantly impairs masticatory function and patient-reported chewing satisfaction.
- The study highlights increased prosthetic complications, specifically dislodgement and attachment replacement, in patients with mandibular atrophy.
- These findings underscore the importance of considering mandibular bone height in the long-term management of implant-retained overdentures.
Related Concept Videos
01:15Teeth
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
01:21Tooth Anatomy
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
01:26Assessment of the Mouth
A thorough mouth assessment, including inspection and palpation of the lips, gums, tongue, tonsils, uvula, and pharynx, is crucial in detecting potential health issues. Diseases ranging from oral cancer to systemic conditions like diabetes could be identified early through careful oral examination. This article provides a detailed guide on conducting a comprehensive mouth assessment.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
01:27The Oral Microbiota
The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...