مقارنة دقة نقل العضة بين شمع الصف و مادة تسجيل العضة المطاطية في الجسور الخلفية : دراسة سريرية

الملخص EN

Backgriund and Aim : this study aimed to evaluate the accuracy of bite record between modelling wax and silicone bite registration material in mounting of dental casts on the articulator.

Materials and Methods : This study is a comparative clinical study.

15 patients with one or more posterior tooth loss who required terminal fixed bridges, two bites were taken for each patient using modelling wax and silicone bite registration material, 30 bites in total.

The occlusal preparation distance inside the patient’s mouth was measured on each mesial and distal abutments using pattern resin and modified tip digital caliper, then it was compared with its equivalent on dental casts after mounting them on the articulator according to each bite separately.

Results : The study showed that there were larger preparation distances between the patient’s mouth and the mounted dental casts using modelling wax.

However, there was no statistical difference when using silicone bite registration material.

In addition, there was not any significant difference between mesial and distal abutments for both materials.

Conclusion: Within this study limits, modelling wax causes an increase in the occlusal preparation distance within (0.27-0.39) mm on mesial and distal abutments, respectively in the terminal abutment bridges, while silicone bite registration material doesn’t cause any increase in both mesial and distal abutments.