The factors that influence postoperative stability of the dental implants in posterior edentulous maxilla

Yun-Ho Kim,Yong-Deok Kim,Na-Rae Choi

doi:10.1186/s40902-016-0100-2

Yun-Ho Kim, Yong-Deok Kim + Show 1 more

Open Access

https://doi.org/10.1186/s40902-016-0100-2

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Abstract

BackgroundAll clinicians are aware of the difficulty of installing a dental implant in posterior maxilla because of proximate position of maxillary sinus, insufficient bone width, and lower bone density. This study is to examine which factors will make the implantation in the posterior maxilla more difficult, and which factors will affect the postoperative implant stability in this region.MethodsFive hundred seventy-three fixtures on the maxilla posterior were included for this study from all the patients who underwent an installation of the dental implant fixture from January 2010 to December 2014 at the Department of Oral and Maxillofacial Surgery in Pusan National University Dental Hospital (Yangsan, Korea). The postoperative implant stability quotient (ISQ) value, fixture diameter and length, presence of either bone graft or sinus lift, and graft material were included in the reviewed factors. The width and height of the bone bed was assessed via preoperative cone beam CT image analysis. The postoperative ISQ value was taken just before loading by using the OsstellTM mentor® (Integration Diagnostics AB, Gothenburg, Sweden). The t test and ANOVA methods were used in the statistical analysis of the data.ResultsMean ISQ of all the included data was 79.22. Higher initial bone height, larger fixture diameter, and longer fixture length were factors that influence the implant stability on the posterior edentulous maxilla. On the other hand, the initial bone width, bone graft and sinus elevation procedure, graft material, and approach method for sinus elevation showed no significant impact associated with the implant stability on the posterior edentulous maxilla.ConclusionsIt is recommended to install the fixtures accurately in a larger diameter and longer length by performing bone graft and sinus elevation.

Highlights

All clinicians are aware of the difficulty of installing a dental implant in posterior maxilla because of proximate position of maxillary sinus, insufficient bone width, and lower bone density
The implantation on the maxillary molar area is in a proximate position with the maxillary sinus, so there is a risk of perforation during the implantation of the dental implant fixture, and the maxilla proximate maxillary sinus usually has insufficient bone width for implantation
The initial bone height, fixture diameter, and fixture length are factors that influence the implant stability on the posterior edentulous maxilla

Summary

Introduction

All clinicians are aware of the difficulty of installing a dental implant in posterior maxilla because of proximate position of maxillary sinus, insufficient bone width, and lower bone density. This study is to examine which factors will make the implantation in the posterior maxilla more difficult, and which factors will affect the postoperative implant stability in this region. The maxilla has a lower bone density than that of the mandible, so it will need more time to ascertain the osseointegration of the implant fixture [1,2,3,4]. These barriers have not yet been entirely resolved. We are going to provide relevant information by comparing our results with that of the previous reports

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Results

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