Soft denture liners are used in complete and partial removable dentures to distribute functional loads homogeneously on the denture-bearing tissues. These materials are recommended in cases of irregular bone resorption, bony undercuts, thin atrophic mucosa, immediate prosthesis, healing after implant placement, and for patients with bruxism and xerostomia.
The resilient lining materials can be categorized as plasticized acrylic resins or silicone elastomers.
The plasticized acrylic resin comprises of acrylic polymers and copolymers, a liquid containing an acrylic monomer and plasticisers, such as ethyl alcohol and/or ethyl acetate responsible for preserving the material softness.
The silicone elastomers, consisting of dimethylsiloxane polymers, with a chemical composition similar to that of the silicone impression materials devoid of leachable plasticisers, retain their elastic properties for prolonged periods.
Most of the currently available materials have several disadvantages, including color stability, long-term resiliency, abrasion resistance, bond strength and porosity. Several modifications have been done recently to overcome of these disadvantages of the soft liners.
When should you soft reline dentures?
Patients who have very tender gums or reoccurring sore spots can benefit from getting a soft reline. Additionally, patients who have received dentures more recently should choose a soft reline due to the especially high rates of bone absorption occurring during this time.
How long does a denture soft reline last?
A soft denture reline lasts between one to two years, and a hard reline can last up to four years. Hard relines last longer than soft relines due to the different materials used. Hard relines use a more durable material than soft relines
Do soft liners make dentures more comfortable?
Soft lined dentures can provide a more comfortable experience. They can help denture wearers chew food with confidence and ease. They can also allow dentures to sit in your mouth with a more natural and less noticeable sensation.