Stability, Mobility and Pull out Forces of Immediate Loaded Endosteal Screw Type Dental Implants of 4 and 4.5mm in Diameter (Comparative Experimental Study)

Luay N Abood ,Munther N Kazanji ,Mumammed J Essa

doi:10.33899/rden.2005.163271

Abstract

Aims: To compare the immediate loaded implants with the non–loaded type by pull–out force test measured with aids of semiautomatic strength tester machine and mobility test using orthodontic gauge and digital vernier. Materials and Methods: Twenty implants (Denti Dental implant system Ltd. Hungary) of screw type 10mm length with 4, and 4.5mm diameter were inserted in the mandible of 5 local breed dogs. Four implants for each animal, 2 of them were immediately loaded two days after surgery with Nickel Chrome crowns. Primary implant stability measured at the base line time, pull–out force test and mobility test done after three months of healing process. One–way analysis of variance with Duncan multiple range test were used for statistical analysis. Results: Revealed that there was no significant difference between the immediate loading and control group for the 4.5mm implant diameter, with significant difference for the 4mm diameter implant. No effect of time on the mobility of implant between the initial stability and final mobility of implants. The success rate of immediate loaded implants was 75% when compared to 100% success rate of non–loaded type. Conclusion: the immediate loading of screw type single–tooth implant of 4.5 mm diameter, 10mm length do not jeopardize tissue inte

Highlights

The ultimate goal of an immediate loading protocol is to predictably reduce surgical interventions and to shorten the time frame between surgery and prosthesis completion
Effect of Load and Diameter on Pull–Out Force Magnitude: Student t–test showed no significant difference between immediate loaded implants of (4.5mm) with the control type, while there was significant difference between the immediate loaded and control groups of (4mm) diameter and significant difference between the immediate loaded type of (4mm) and (4.5mm) diameter implants (Table 1)
Immediate loading, implants are successful when compared to delayed type loaded implant procedure. This result was in agreement with the result of other studies.[25,26,27,28] Other study showed that the immediate loading of interforaminal mandibular implants demonstrated a highly acceptable clinical success with an intimate bone contact when compared to the non–loaded implants.[29]. The result of this study showed that immediate loading implant protocol with 4mm diameter gives a significant difference with lower pull–out force when compared with delayed loaded implant

Summary

Introduction

The ultimate goal of an immediate loading protocol is to predictably reduce surgical interventions and to shorten the time frame between surgery and prosthesis completion. Encouraging initial results shown for splinted restorations.[3,4,5,6] In an animal study, Corso et al,(7) investigated the effect of immediate loading of single standing dental implants with different surfaces. They reported good results, provided that the implant has an excellent primary stability, showed that unsplinted implants could be loaded immediately in single crown restorations of the edentulous mandible.

Methods

Results

Discussion

Conclusion