Tandläkare

Tandläkare

A dental partial flexible denture is a precision-engineered prosthetic featuring a biocompatible thermoplastic resin framework (typically polyamide). With an elastic modulus of 2.8–3.5 GPa, it ensures optimal tissue adaptation, seamless undercut insertion, and even occlusal force distribution to minimize Intilliggande tandspänning . Ramverket integrerar precisionsbehållning (0,2–0,5 mm underklippta flexibla spännen) och vita-skuggade akryltänder. Dess icke-porösa, 1,5–2,5 mm tunna struktur motstår färgning och förbättrar komforten, idealisk för partiell edentulism restaureringsbalans estetik, funktion och biokompatibilitet.

Hur påverkar vattenabsorptionshastigheten för flexibla protesmaterial deras långsiktiga prestanda, som dimensionell stabilitet och potential för bakterietillväxt?

The water absorption rate of flexible denture materials affects their long-term performance in two key ways. First, higher water absorption causes swelling and dimensional changes, which can make the denture loose or misaligned over time. Repeated wetting and drying can also lead to microcracks, weakening the structure. Second, absorbed water creates a moist environment that promotes Bakterietillväxt, ökande risker för infektion eller dålig andedräkt . Material med högre absorptionshastigheter tenderar att ha mer bakteriell uppbyggnad och djupare mikrobiell penetration .

To address this, manufacturers use hydrophobic fillers or cross-linked polymers to reduce water uptake. Clinically, patients should clean dentures daily and dry them overnight to limit hydration. Choosing materials with low water absorption (e.g.,<0.5%) helps maintain fit and hygiene, while thinner, smoother designs further minimize issues. Proper care and material selection are key to ensuring durability and comfort.