Relining of removable dentures: a literature review

Abstract

The alveolar bone resorption that occurs after tooth loss leads to maladaptation of prostheses over the mucosa, causing discomfort to the patient. However, these maladaptations can be solved by prosthesis relining. Objective: The aim of this study was to discuss based on the literature, the relining of complete and partial removable dentures. Literature review: Dentistry makes use of relining materials that can be either rigid or resilient, having a temporary or permanent characteristic. However, to obtain a satisfactory result, the knowledge of their indications, contraindications, advantages, disadvantages is required, in addition to the characteristics and types of materials. Patients should be aware of the importance of constant monitoring, or even the need to reline their dentures, as it is not possible to determine the biological tolerance of each individual. Conclusion: The installation and proservation phases become essential to minimize bone resorption, and also to achieve rehabilitative treatment success.

Effect of soft denture liners on complete denture treatments: A systematic review

“…Furthermore, older adults often find the adaptation to new dentures difficult, and even if a theoretically correct denture could be made and worn, it may not be acceptable to some patients. Therefore, for patients with difficult complete dentures, relining the denture with SDR is effective and has the same elasticity as the oral mucosa to relieve masticatory pressure [70], provide appropriate occlusion, and adjust the denture base edges instead of fabricating a new denture [71]. In addition, its application in maxillofacial prosthetics and adaptability to the undercut area of the residual ridge are expected to have a maintenance effect [11,65,66].…”

Effect Of Various Curing Conditions In Pressure Cooker On Flexural Strength Of Denture Hard Relining Materials

“…This reduction of the residual alveolar ridge occurs most expeditiously since tooth extraction in first 6 months to 2 years [4], which lead to inadaptability of the former denture base and also reducing capacity of speech and mastication. For the resorbed residual alveolar ridge, the denture base is needed to be relined to provide comfort to patient by recovering the biomechanical properties and occlusion [5], improve adaptation to the residual ridge, restore fit, improve support retention and stability of denture base [6,7]. Autopolymerizing acrylic resin can be used to directly reline in the mouth.…”

“…Autopolymerizing acrylic resin in is suitable for various situations including for maladapted prostheses poor retention and stability both at the delivery moment and after been used and give excellent outcomes. [5] One of the obviously disadvantages of autopolymerizing acrylic resin is unreacted methyl methacrylate (MMA) [8] or residual monomer which achieved by using the chemical activator and resulted the low degree of conversion. [9] Many researchers found that several autopolymerizing acrylic resin shown high percentage of residual monomers, which can compromise the physical properties, such as the less glass transition temperature [10], more flexibility of the material, less tensile strength, and increase water absorption [11].…”

“…[28] There is contraindication of relining recommended in cases of prostheses with great tooth wear or malposition teeth; premature contacts or interferences; patients shown an inflamed or hyperplastic support mucosa; loss of vertical dimension more than 3 mm or lack of inter-occlusal space. [5] Besides, in newly fabricated distal extension removable partial denture, a small degree of error could happen during processing which is shrinkage of denture acrylic resin about 3-6% during polymerization. [29] In addition, there is a laboratory data shown that denture can be reached a better fitting by relining the heat polymerizing denture base with an autopolymerizing acrylic resin before placement.…”

“…In addition, cytotoxicity effect has been reported. [8,[38][39][40] Residual monomer can affect on the physical properties such as the reduced the glass transition temperature [10], the decreased flexural strength of the material [12,51], and also more allergic reaction [13], irritation and inflammation of oral tissue [5,8]. Because of these reasons, various methods have been used to decrease the residual monomer, such as relined denture immersion in hot water (50-55ºC) [9], immersion in water for 24 hours after completed polymerization [14], microwave post-polymerized radiation [15] and ultrasonic immersion in water [52][53][54] or ethanol solution [55,56].…”