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Reinforcement in removable prosthodontics: a literature review
T Takahashi1, T Gonda1, Y Mizuno1
1Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Suita, Japan.
Journal of Oral Rehabilitation
|November 29, 2016
Summary
Reinforcing removable prostheses with cast metal, particularly in thin areas, improves fracture toughness and stiffness. Further clinical studies are needed to confirm optimal reinforcement strategies for dental applications.
Area of Science:
- Dental materials science
- Prosthodontics engineering
Background:
- Removable prostheses frequently experience mechanical failures like fracture and deformation.
- These failures significantly impact prosthesis usability and patient quality of life (QOL).
- Current reinforcement methods lack a consensus for optimal application.
Purpose of the Study:
- To review the effects of various reinforcement techniques in removable prosthodontics.
- To identify favorable reinforcement materials, designs, and placement strategies.
- To highlight gaps in current research, particularly clinical evidence.
Main Methods:
- A systematic review of 139 articles, with 40 ultimately included.
- Searches conducted across PubMed, EMBASE, MEDLINE, and Cochrane Library (2005-2015).
- Inclusion of in vitro studies examining mechanical properties (fracture strength, flexural strength, elastic modulus) of reinforced materials.
Main Results:
- Cast metal reinforcements demonstrated superior fracture toughness and stiffness.
- Favorable reinforcement forms varied by prosthesis type.
- Strategic placement around thin and deformable areas proved effective.
Conclusions:
- Cast metal reinforcement appears most promising for enhancing mechanical properties of removable prostheses.
- Optimal reinforcement design and placement are prosthesis-dependent.
- A significant lack of randomized clinical trials and comparative studies necessitates future research.
