J Korean Acad Prosthodont.  2008 Jun;46(3):280-289.

Comparison of retentive forces of temporary cements and abutment height used with implant-supported prostheses

• Lee DH
• Suh KW
• Ryu JJ

Abstract

STATEMENT OF THE PROBLEM: Recent data regarding the effects the cement type and abutment heights on the retentive force of a prosthetic crown are inconsistent and unable to suggest clinical guidelines. PURPOSE OF THE STUDY: This study evaluated the effects of different types of temporary cements and abutment heights on the retentive strength of cement-retained implant-supported prostheses. MATERIALS AND METHODS: Prefabricated implant abutments, 4 mm in diameter, 8degrees taper per side, and light chamfer margins, were used. The abutment heights of the implants were 4 mm, 5.5 mm and 7 mm. Seven specimens of a single crown similar to a first premolar were fabricated. Six commercially available temporary cements, TempBond, TempBond NE, Cavitec, Procem, Dycal, and IRM, were used in this study. Twenty-four hours after cementation, the retentive strengths were measured using a universal testing machine with a crosshead speed of 0.5 mm/min. The cementation procedures were repeated 3 times. The data was analyzed using two-way analysis of variance and a Tukey test (alpha=0.05). RESULTS: The tensile bond strength ranged from 1.76 kg to 19.98 kg. The lowest tensile strengths were similar in the TempBond and Cavitec agents. Dycal showed the highest tensile bond strength (P<0.01). More force was required to remove the crowns cemented to the long abutments (P<0.05). CONCLUSION: TempBond and Cavitec agents showed the lowest mean tensile bond strength. The Dycal agent showed more than double the tensile bond strength of the TempBond agent.

Keyword

Dental implantation; Dental cements; Dental abutments; Tensile strength

MeSH Terms

Bicuspid
Calcium Hydroxide
Cementation
Collodion
Crowns
Dental Abutments
Dental Cavity Lining
Dental Cements
Dental Implantation
Eugenol
Light
Minerals
Prostheses and Implants
Tensile Strength
Zinc Oxide
Calcium Hydroxide
Collodion
Dental Cavity Lining
Dental Cements
Eugenol
Minerals
Zinc Oxide