Journal article Open Access

RISE IN TEMPRATURE INSIDE THE PULP CHAMBER DURING DIRECT FABRICATION OF TWO DIFFERENT PROVISIONAL RESTORATION MATERIALS

Dr. Maria Manzoor, Dr. Iqra Mushtaq, Dr. Shehla Qandil


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    <subfield code="a">RISE IN TEMPRATURE INSIDE THE PULP CHAMBER DURING DIRECT FABRICATION OF TWO DIFFERENT PROVISIONAL RESTORATION MATERIALS</subfield>
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    <subfield code="a">&lt;p&gt;Objective: To compare mean rise in temperature during provisional restoration by using Polymethyl methacrylate resin (PMMA) versus bis-glycidyl methacrylate (Bis-GMA) material. In this invitro study, a total number of 60 extracted maxillary central incisor teeth who were extracted because of any reason like orthodontic purpose and grade 2 and 3 mobility were included in this study. After inclusion, the teeth were divided into two groups on the basis of fabrication material used. In group I; Poly-methyl methacrylate resin (PMMA) was used for provisional restoration. And in group II; bis-glycidyl methacrylate (Bis-GMA) was used for provisional restoration. Mean rise in pulp temperature was noted till 15 minutes after restoration. A total number of 60 teeth were selected, out of which 31 (51.67%) were right maxillary central incisor and 29 (48.33%) were left maxillary central incisor. mean rise in temperature was significantly high in PMMA group; 40.61&amp;plusmn;0.53 &amp;deg;C versus 39.39&amp;plusmn;0.54 &amp;deg;C in Bis-GMA group (p-value &amp;lt;0.0001). In patients who underwent provisional restoration of right maxillary central incisor, mean rise in temperature was 40.79+0.33 &amp;deg;C in PMMA group versus 39.41+0.53 &amp;deg;C Bis-GMA group (p-value &amp;lt;0.0001). In patients who underwent provisional restoration of left maxillary central incisor, mean rise in pulp temperature was 40.43+0.71 &amp;deg;C versus 39.39+0.46 &amp;deg;C (p-value &amp;lt;0.0001). So in conclusion we found that the mean rise in pulp temperature using Bis-GMA resin was significantly less as compared to the GMMA material. So Bis-GMA should be preferred over GMMA material for provisional restorations.&lt;/p&gt;</subfield>
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