Kamil Zafar

The goal of root perforation management is the regeneration of healthy supporting periodontal tissues without persistent inflammation or loss of periodontal attachment. In case of periodontal attachment breakdown, then the aim is to re-establish tissue attachment. Therefore, a successful perforation repair is mainly dependent on the ability to seal the perforation defect and re-establish the supporting periodontal attachment. So, the selection of sealing material is considered as an important factor that affects the outcome of treatment. This book presents a substantial work on the sealing ability of conventional and contemporary materials.

The objective of the study was to compare the frequency of contamination on used with unused (brand new) healing abutment after sterilization using Phloxine B dye and to determine the contamination on different sites of healing abutment using Phloxine B dye. A total of 60 healing abutment (Zimmer and Biohorizon) divided into equal test (unused new HA) and control groups (used HA) were evaluated for contamination after sterilization. Data was analyzed using SPSS version 22. Chi-square was used to compare the frequency of contamination between two groups. Effect modifiers like site of healing abutment and type of healing abutment were controlled through stratification. The level of significance was kept at p value = 0.01).