J Korean Acad Prosthodont.  2015 Apr;53(2):105-110. 10.4047/jkap.2015.53.2.105.

Accuracy of the healing abutment and impression coping combined system on implant impression

Affiliations
  • 1Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea. kblee@knu.ac.kr
  • 2RaphaBio Co., Seoul, Republic of Korea.

Abstract

PURPOSE
The purpose of this study was to evaluate the 3 dimensional accuracy of impression taking on the newly developed healing abutment and impression coping combined system comparing conventional pick-up type impression.
MATERIALS AND METHODS
For 10 patients who had a single missing tooth on molar area, dental implants (SuperLine; Dentium, Seoul, Korea) were placed and healing abutment (MyHealing; Raphabio Co., Seoul, Korea) abutments were connected. After 3 months, transfer type impression with MyHealing and pick-up type impression with impression coping were performed twice in the same patients, and master models were fabricated. Customized prosthetic abutments (Myplant; Raphabio Co., Seoul, Korea) were milled and connected to the master casts. Through a dental scanner (Scanner S600; Zirkonzahn, South Tyrol, Italy), the master casts were converted into virtual casts. The length and angulation differences between casts were measured using 3 dimentional analysis program (Geomagic Qualify 12; Geomagic, Morrisville, NC, USA). Statistical significance was calculated using Kruskal Wallis test and Mann-Whitney U test (alpha=.05).
RESULTS
The length differences between the two systems were 0.032 mm in sagittal plane, and 0.029 in coronal plane, and 0.023 mm in horizontal plane. The angulation differences were 0.755#x00B0; in sagittal plane, and 1.275#x00B0; in coronal plane, and 0.420#x00B0; in horizontal plane.
CONCLUSION
The accuracy of newly developed healing abutment system is similar to that of conventional pick-up impression. The new system can reduces chair time by not using separate impression coping.

Keyword

Implant; Healing abutment; Impression taking; Accuracy

MeSH Terms

Dental Implants
Humans
Molar
Seoul
Tooth
Dental Implants
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