The Effect of Two Implant Drilling Protocols on Primary Stability and Strain Developed Under Functional Loading Using Different Thread Designs (An Invitro Study) | ||
| PUA Dental Journal | ||
| Articles in Press, Accepted Manuscript, Available Online from 20 October 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/puadent.2025.432566.1019 | ||
| Author | ||
| Khalid M Ibrahim* | ||
| Department of Prosthodontics, Faculty of dentistry, Pharos University in Alexandria | ||
| Abstract | ||
| Background: Osseodensification is a novel drilling protocol which enhances contact at the bone implant interface. Objectives: The aim of this study was to compare influence of Osseodensification drills compared to conventional drills on the strain developed under functional occlusal loading of crown restorations on implants using different thread designs. Materials and Methods: Two implant thread designs: standard and deep threaded implants were fixed in twenty-four Polyurethane blocks and divided into four parallel groups (n=6). Group (I) and (II) –Standard thread depth placed with conventional vs Osseodensification drills, Group (III) and (IV) –Deep threads placed with conventional vs Osseodensification drills. Twenty-four E-max CAD maxillary right first premolar crowns were fabricated on implant abutments. Mean values of primary stability and insertion torque were calculated and compared. The specimens were vertically loaded with a universal testing machi[ne and force up to 100 N was applied to the central fossae. Two strain gauges were attached to the buccal and palatal surfaces of the restoration to record the resulting strain. Mean values of strain were recorded in each group and compared. Results: Group IV exhibited the highest mean IT and ISQ values followed by groups III, II and I respectively. Groups II and IV exhibited lower mean micro strain; than Groups I and III. There were statistically significant differences between groups (p ≤ 0.05). Conclusions: Osseodensification may aid in achieving higher insertion torque and ISQ values of tapered implants in medium quality bone and decrease amount of strain in dental implant prostheses during functional loading. | ||
| Keywords | ||
| Osseodensification; Conventional Drilling; Densah; Deep Threads; Standard Threads | ||
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