Kotaro Oyama

Abstract

Immediate provisionalization of single implants with standard (3.75 - 4.5 mm) and wide diameter (> 4.5 mm) has been well documented. When the space is limited, small diameter implants (3.0 mm) must be used. Although high success rates have been reported, they were limited to healed site and were placed as staged procedures. The purpose of this prospective study was to evaluate the success rate and peri-implant tissue response of small diameter (3.0 mm) implants undergoing immediate provisionalization in the esthetic area.

Eleven patients who had missing maxillary lateral incisor(s) and/or mandibular incisor(s) participated in this study. Thirteen 3.0 mm diameter threaded grit-blasted thermal acid-etched implants (Xive S, Dentsply Friadent Ceramed, CO) were placed and immediately provisionalized. Implant success rate, peri-implant marginal bone level and its changes, modified plaque index (mPII), and modified sulcus bleeding index (mBl) were evaluated at time of implant placement (0-), 3-, 6- and 12-months follow-up. Any related complications were also noted. Bone quality was evaluated at time of implant placement and Periotest values (PTVs) were recorded at 0- and 3-months follow-up.

All implants were functioning at 12-months follow up indicating a success rate of 100% (13/13). Mean and SD of the marginal bone level at 0-, 3-, 6-, and 12-months were -0.03 ±0.10 mm, -0.34 ± 0.40 mm, -0.44 ± 0.50 mm, and -0.46 ± 0.40 mm respectively. Significant difference in marginal bone level was observed between 0-, 3-, 6-, and 12-months. Mean and SD of the marginal bone level changes from 0-month, to 3-, 6-, and 12-months were -0.30 ± 0.39 mm, -0.41 ± 0.52 mm, and -0.42 ± 0.40 mm respectively. There were no statistically significant differences between each time intervals. Mean and SD of PTVs recorded were -1.00 ± 2.35 (range -4 to 6), and -2.62 ± 1.85 (range -7 to 0) at 0- and 3-months respectively and there was no statistically significant difference. In addition, there was no statistically significant difference in the mPII and mBI scores at each time interval and it indicated that good oral hygiene was maintained through out the study. One implant was removed because of surgical complication. Post-operative CT scan revealed that the apical half of the implant perforated a buccal cortical plate and did not engage in bone. Other complications were prosthesis-related and occurred within the first 3 months. Six provisional crowns were fractured, 2 provisional crowns were loose, and 2 temporary abutment screws were loose.

The results of this study suggested that favorable implant success rate, peri-implant tissue response and esthetic outcome can be achieved with immediately placed and provisionalized single small diameter (3.0 mm) implants in maxillary and mandibular anterior regions.

LLU Discipline

Implant Dentistry

Department

Implant Dentistry

School

Graduate Studies

First Advisor

Joseph Y. K. Kan

Second Advisor

Matthew Kattadiyil

Third Advisor

Jay S. Kim

Fourth Advisor

Jaime L. Lozada

Fifth Advisor

Kitichai Rungcharassaeng

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

2008

Date (Title Page)

6-2008

Language

English

Library of Congress/MESH Subject Headings

Orthodontics, Corrective; Incisor

Type

Thesis

Page Count

vi; 25

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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