Evaluation of Marginal Fits of Crown Substructure Designs in Implant-Supported Abutments

BACKGROUND The purpose of this clinical study was to compare the marginal adaptation of infrastructure design with 4 different techniques. MATERIAL AND METHODS Forty tissue-level implant abutments (NTA, Shorter) were inserted on implant analogs. The samples were placed randomly in the wax blocks in...

Full description

Saved in:
Bibliographic Details
Published in:Medical science monitor 2018-10, Vol.24, p.7778-7784
Main Authors: Görüş, Zuhal, Üner, Devrim Deniz
Format: Article
Language:English
Subjects:
Crowns
Dental Implant-Abutment Design - methods
Dental Implants
Dental Porcelain - chemistry
Dental Prosthesis Design - methods
Humans
Lab/In Vitro Research
Lasers
Surface Properties
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:BACKGROUND The purpose of this clinical study was to compare the marginal adaptation of infrastructure design with 4 different techniques. MATERIAL AND METHODS Forty tissue-level implant abutments (NTA, Shorter) were inserted on implant analogs. The samples were placed randomly in the wax blocks in the arch form of the upper jaw so that there would be 10 in each group. Test samples were obtained using the conventional casting method (CC), milling from metal blocks method (MB), direct metal laser sintering method (LS), and Noritake Alliance (NA) system. Data were analyzed by ANOVA with t tests. RESULTS After porcelain oven-drying, marginal gaps of metal substructures obtained by using conventional casting and milling methods were observed to decrease. The smallest value of the marginal gaps was found in the Noritake (NA) system, and the largest value in the milling (MB) method before and after oven-drying. The marginal gap of the direct metal laser sintering method was not significantly different from the change in the marginal gap of other metal substructures (p>0.05). CONCLUSIONS The marginal gap of the substructures obtained using the direct metal laser sintering method was not significantly different from the change in marginal gap of other metal substructures (p>0.05).
ISSN:1643-3750
1234-1010
1643-3750
DOI:10.12659/MSM.910490