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KMID : 0362420150530020105
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Journal of Korean Academy of Prosthodontics
2015 Volume.53 No. 2 p.105 ~ p.110
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Accuracy of the healing abutment and impression coping combined system on implant impression
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Jeon Kyoung-Bae
Lee Du-Hyeong
Kim Jung-Han
Hwang Jun-Ho
Park Hyun-We
Lee Kyu-Bok
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Abstract
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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 (α=.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??in sagittal plane, and 1.275??in coronal plane, and 0.420??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.
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KEYWORD
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Implant, Healing abutment, Impression taking, Accuracy
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