A COMPARISON OF METAL AND PLASTIC COPINGS REGARDING THE ACCURACY OF IMPLANT TRANSFER IMPRESSION TECHNIQUES
IN VITRO STUDY
DOI:
https://doi.org/10.59743/jbs.v34i1.22Keywords:
Closed tray, Implant impression, Plastic coping, Three dimensionalAbstract
A successful implant restoration can be achieved only when a passively fitting prosthesis is fabricated. The impression must record the soft tissue supporting areas simultaneously with accurate positioning of implant components. Reproducing the intraoral relationship of implants through impression procedures is the first step in achieving an accurate passively fitting prosthesis. This study aimed to evaluate and compare the metal and plastic impression copings regarding the accuracy of indirect implant transfer impression techniques. This in vitro study was carried out on a acrylic resin model representing a completely edentulous mandibular ridge with four implants installed bilaterally in the canine and first molar areas and soft liner material had been used at the ridge. Using closed tray for impression. Ten impressions for two groups: Group I. Impression with metal transfer copings. Group II. Impression with plastic transfer copings. The acrylic resin mode and each stone casts were measured using a measure scope. There was insignificant difference between changes in different distances in horizontal plane for group I (metal coping). There was a significant difference between changes in different distances in horizontal plane for group II (plastic coping). There was insignificant difference between changes in different distances in vertical planes for both groups. It is possible to conclude that: 1- Regarding the displacement in horizontal plane, the impression transfer metal coping can be considered better than the impression transfer plastic coping. 2-Considerable vertical displacement occur in the two impression transfer copings evaluated in this study.
References
Del'Acqua MA, Arioli-Filh JN, Compagnoni MA, Mollo Fde A Jr. Accuracy of impression and pouring techniques for an implant-supporled prosthesis. Int J oral Maxillofac Implants. 2008; 23:226-236.
Del'Acqua MA, Chávez AM, Compagnoni MA, Molo Fde A Jr. Accuracy of impression techniques for an implant-supported prosthesis. Int J Oral Maxillofac Implants. 2010; 25:715-721.
Del'Acqua MA, Chavez AM, Amaral AL, Compagnoni MA, Mollo Fde A Jr. Cornparison of impression techniques and materials for an implant-supported prosthesis. Int J Oral Maxillofac Implants. 2010; 25:771-776.
Wee AG, Schneider RL, Aquilino SA, Huff TL, Lindquist TJ, williamson DL. Evaluation of the accuracy of solid implant casts. J Prosthodont. 1998;7:161-169.
Kan JY, Rungcharassaeng K, Bohsali K, Goodacre CJ, Lang BR. Clinical methods for evaluating implant framework fit. J Prosthet Dent. 1999; 81:7 -13.
Conrad HJ, Pesun IJ, Delong R, Hodges JS. Accuracy of two impression techniques with angulated implants. J prosthet Dent. 2007; 97:349-356.
Jang HK, Kim S, Shim JS, Lee KW, Moon HS. Accuracy of impressions for internal-connection implant prostheses with various divergent angles. Int J Oral Maxillofac Implants. 20l0; 26:1011-1015.
Assuncao WG, Filho HG, Zaniquelli O. Evaluation of transfer impressions for osseointegrated implants at various angulations. Implant Dent. 2004; 13:358-366.
Rashidan N, Alikhasi M, Samadizadeh S, Beyabanaki E, Kharazifard MJ. Accuracy of implant impressions with different impression coping types and shapes. Clin Implant Dent Relat Res. 2009;14:2l8-225.
Alikhasi M, Siadat H, Monzavi A, Momen-Heravi F. Three-dimensional accuracy of implant and abutment level impression techniques: Effect on marginal discrepancy. J Oral Implantol. 2011;37:649-657.
Academy of Prosthodontics: The glossary of prosthodontics terms. J Prosthet Dent 2005; 94: 10-92.
Kim S, Nicholls JI, Han CH, Lee KW. Displacement of implant components from impressions to definitive casts. Int J Oral Maxillofac lmpiants. 2006; 21:747-755.
Nissan J, Gross M, Shifman A, Assif D. Stress levels for wellfitting implant superstructures as a function of tightening force levels, tightening sequence, and different operators. J prosthet Dent. 2001; 86:20-23.
Assuncao WG, Britto RC, Barao VA, Delben JA, Santos PH. Evaluation of impression accuracy for implant at various angulations. Implant Dent. 2010; 19:167-17 4.
Carr AB. Comparison of impression techniques for a five implant mandibular model. Int J Oral Maxillofac Implants. l99l; 6:448- 455.
Assif D, Marshak B, Schmidt A. Accuracy of implant impression techniques. Int J Oral Maxillofac Implants. 1996; 11:216-222.
Liou AD, Nicholls JI, Yuodelis RA, Brudvik JS. Accuracy of replacing three tapered transfer impression copings in two elastomeric impression materials. Int J Prosthodont. 1993; 6:377-383.
Barrett MG, de Rijk WGo Burgess JO. The accuracy of six impression techniques for osseointegrated implants. J Prosthodont. 1993; 2:75-82.
Humphries RM, Yaman P, Bloem TJ. The accuracy of implant master casts constructed from transfer impressions. Int J Oral Maxillofac Implants. 1990; 5:331-336.
Sorrentino R, Gherlone EF, Calesini G, Zarone F. Effect of implant angulation, connection length, and impression material on the dimensional accuracy of implant impressions: an in vitro comparative study. Clin Implant Dent Relat Res. 2010;12: e63-76.
Wenz HJ, Hertrampf K. Accuracy of impressions and casts using different implant impression techniques in a multi-implant system with an internal hex connection. Int J Oral Maxillofac Implants. 2008; 23:39-47.
Heather J. Conrad, Igor J. Pesun, Ralph DeLong, James S. Hodges-Accuracy of two impression techniques with angulated implants. J Prosthet Dent. 2007; 97:349-356.
Stimmelmayr M, Erdelt K, Güth JF, Happe A, Beuer F. Evaluation of impression accuracy for a four-implant mandibular model--a digital approach. Clin Oral Investig. 2012; 16:1137-1142.
Walker MP, Ries D, Borello B. Implant cast accuracy as a function of impression techniques and impression material viscosity. Int J Oral Maxillofac Implants. 2008; 23:669-674.
Waskewicz GA, Ostrowski JS, Parks VJ. Photoelastic analysis of stress distribution transmitted from a fixed prosthesis attached to osseointegrated implants. Int J Oral Maxillofac Implants. 1994; 9:405-411.
Fernandez MA, Paez de Mendoza CY, Platt JA, Levon JA, Hovijitra ST, Nimmo
A. A comparative study of the accuracy between plastic and metal impression transfer copings for implant restorations. J Prosthodont. 2013; 22:367-376.
Teo JW, Tan KB, Nicholls JI, Wong KM, Uy J. Three-dimensional accuracy of plastic transfer impression copings for three implant systems. Int J Oral Maxillofac Implants. 2014; 29:577-584.
Ma T, Nicholls JI, Rubenstein JE. Tolerance measurements of various implant components. Int J Oral Maxillofac Implants. 1997; 12:37l-375.
Rubenstein JE, Ma T. Comparison of interface relationships between implant components for laser-welded titanium frameworks and standard cast frameworks. Int J Oral Maxillofac Implants. 1999; 14:491-495.
Lee H, Ercoli C, Funkenbusch PD, Feng C. Effect of subgingival depth of implant placement on the dimensional accuracy of the implant impression: an in vitro study. J Prosthet Dent. 2008; 99:107-113.
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