Comparing the Degree of Exothermic Polymerization in Commonly Used Acrylic and Provisional Composite Resins for Intraoral Appliances

Abstract

The use of dental acrylics and composite resins in veterinary dentistry has become widespread. However their use is not without potential complications. All acrylics and composite resins produce an exothermic reaction during the polymerization process. The aim of the current study was to evaluate thermal conduction during the polymerization reaction of each material to offer clinical guidelines when choosing a material with particular consideration for the significant volumes typically used. Results showed that methylmethacrylate based resins generated a significantly higher degree of heat during polymerization. Bis-acryl based composite resins generated a significantly lower degree of heat during polymerization, making them the material of choice to potentially minimize thermal injury to the dentin-pulp complex. It is the responsibility of the clinician to become aware of all materials available, and to have an understanding of their properties to guide them in making sound clinical judgments.

Treatment and Stabilization of Beak Symphyseal Separation Using Interfragmentary Wiring and Provisional Bis-Acryl Composite

“…[11][12] If using an exothermic material, the temperature of the fixation device should be monitored during chemical curing of the acrylic. 13 The use of acrylic composite materials as a prosthetic mandibular beak device has been described previously. 1 While not as exothermic, provisional dental composites have also been reported to have a degree of exothermic heat production.…”

Use of dental restorative temporization material for attaching radiotransmitters to hedgehogs

“…Once the paste and catalyst mix, the polymerization process begins and the composite hardens around the transmitter and quills. The polymerization phase generates almost no heat (i.e., slightly warm to the touch; 3M ESPE , Rice et al , Khajuria et al ) and the composite does not stick to any surface (3M ESPE ). Finally, unless ingested in large quantities (>2–5 g/kg), the composite is nontoxic, producing no detectable monomer release (3M ESPE ; a , b ).…”

“…Unfortunately, these studies do not provide the exact names of the glues, acrylics, and resins used or how they attached them. Although we could find no reports of adverse effects from these attachment methods, we believe that the toxic glues, acrylics, and resins used might pose a risk of injury to the animals and researchers by generating heat, adhering to their skin, and exposing individuals to potentially toxic materials (Rice et al , Khajuriaet al ). We captured individuals of 2 species of hedgehogs, the Daurian hedgehog ( Mesechinus dauuricus ) and long‐eared hedgehog ( Hemiechinus auritus ), in an arid steppe region of Mongolia to study how species of hedgehogs cohabitate and partition resources (Reading et al ).…”

Mandibular body fracture repair with wire‐reinforced interdental composite splint in small dogs

“…Among those, the Stout loop and crossover techniques were found to have similar biomechanical properties in a recent in vitro study . Materials recommended to produce interdental splints, such as bis‐acrylic resin, are specially designed for intraoral use (eg, temporary crown materials), and cure without exothermic reaction . In addition, micromechanical retention of the resin material can be enhanced by acid etching of the enamel, which creates a rough, superficially demineralized surface …”

“…4 Materials recommended to produce interdental splints, such as bisacrylic resin, are specially designed for intraoral use (eg, temporary crown materials), and cure without exothermic reaction. 39,40 In addition, micromechanical retention of the resin material can be enhanced by acid etching of the enamel, which creates a rough, superficially demineralized surface. [41][42][43] The management of mandibular fractures with interdental splints is well described in textbooks and anecdotal case reports, [16][17][18][19][20][21][22][23][24][25][26][27] but long-term outcomes of this repair technique in small breed dogs remains poorly documented.…”