Phillip Roe

Abstract

In this one-year prospective study, eight completely edentulous patients were selected from the Loma Linda University School of Dentistry (LLUSD) patient population to participate. There were five male and three female patients, between the ages of 58 and 82 (mean age of 69.1 years). All participants received new maxillary and mandibular complete dentures prior to implant placement. Two 4.0 mm x 13 mm threaded implants with a fluoride-modified, micro-roughened, titanium surface were placed mesial to each mandibular canine position. Locator abutments were connected and torqued to 25 Ncm and primary closure was achieved with a nonresorbable suture material. The Locator attachments were picked up with repair resin and light-retention (1.5 lb) inserts were placed. Post-operative instructions were reviewed with the patient.

The following parameters were recorded at the time of implant placement 0-, 3-, 6-, and 12-months after surgery when applicable: implant success rates, marginal bone level via standardized periapical radiographs, Periotest values (PTV), modified plaque index (mPI), surgical and prosthetic complications.

All implants were successfully osseointegrated (16/16) with a follow-up time of 12-months. The mean marginal bone levels at 0-, 3-, 6-, and 12-months were 0.14 ± 0.38 mm, -0.16 ± 0.18 mm, -0.19 ± 0.20 mm, and -0.22 ± 0.21 mm, respectively. The mean PTV following 0-, 3-, 6-, and 12-months was -5.00 ± 2.60, -5.94 ± 1.18, -6.38 ± 0.74, and -6.94 ± 0.73, respectively. The mPl scores showed improved oral hygiene over time. Surgical complications included rotational instability of two implants (2/16) at the time of surgery. One of the two implants was replaced with a larger diameter implant (4.5 mm x 13 mm) due to the lack of primary stability. Prosthetic complications included abutment loosening on one implant at five months and the installation of new attachment inserts for two patients at their one-year recall examination.

This one-year prospective study has shown that the implant success rate and marginal bone responses around two immediately loaded unsplinted threaded implants with a fluoride-modified, micro-roughened, titanium surface in the anterior mandible retaining an overdenture, were favorable and comparable to that of conventional delayed-loaded implants.

LLU Discipline

Prosthodontics

Department

Prosthodontics

School

Graduate Studies

First Advisor

Joseph Y. K. Kan

Second Advisor

Charles J. Goodacre

Third Advisor

Mathew T. Kattadiyil

Fourth Advisor

Alejandro S. Kleinman

Fifth Advisor

Jaime L. Lozada

Sixth Advisor

Kitichai Rungcharassaeng

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

2009

Date (Title Page)

3-2009

Language

English

Library of Congress/MESH Subject Headings

Dental Implantation, Endosseous -- methods; Aged; Mandible -- surgery; Dental Prosthesis, Implant-Supported; Dental Abutments; Dental Materials; Titanium; Follow-Up Studies

Type

Thesis

Page Count

xii; 58

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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