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Abstract

The effect of width of the restoration, tooth position, and amalgam type on the fracture of the margins of 13- to 14-year-old, high-copper, amalgam restorations was evaluated. The evaluation assessed 193 photographs of restorations by use of ridit analysis and a rank-ordering test. The results indicated that the width of the restoration was the predominant factor and that tooth position and the different high-copper alloys were less significant. Interactions between tooth position and width indicated that lower premolars with conservative restorations exhibited the least fracture at the margins, and upper premolars with a wide preparation exhibited the most. It is postulated that tooth deflection under mastication may play a role in long-term fracture at the margins of amalgams.

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References

Berry, T.G. ; Laswell, H.R. ; Osborne, J.W. ; and Gale, E.N. (1981): Width of Isthmus and Marginal Failure of Restorations of Amalgam, Oper Dent 6:55-58.

Derand, T. (1977): Marginal Failure of Amalgam Class II Restorations , J Dent Res 56:481-485.

Derand, T. (1983): Marginal Failure of Amalgam: Effect of Alloy Selection and Biting Forces, Swed Dent J 7:65-68.

Fleiss, J.L. ; Chilton, N.W. ; and Wallenstein, S. (1979): Ridit Analysis in Dental Clinical Studies, J Dent Res 58 :2080-2084.

Goldberg, J. ; Tanzer, J. ; Munster, E. ; Amara, J. ; Thal, F. ; and Birkhed, D. (1980): Cross-sectional Clinical Evaluation of Recurrent Enamel Caries, Restoration of Marginal Integrity, and Oral Hygiene Status , J Am Dent Assoc 102:635-641.

Jorgensen, K.D. (1965): The Mechanism of Marginal Fracture of Amalgam Fillings, Acta Odontol Scand 23:347-389.

Letzel, H. ; Vrijhoef, M.M.A. ; Van't Hof, M.A. ; Marshall, G.W. ; and Marshall, S.J. (1989): A Controlled Clinical Study of Amalgam Restorations: Survival, Failures and Causes of Failure, Dent Mater 5:112-115.

Mahler, D.B. and Marantz, R.L. (1979): The Effect of the Operator on the Clinical Performance of Amalgam, J Am Dent Assoc 99:38-41.

Mahler, D.B. and Marantz, R.L. (1980): Marginal Fracture of Amalgam: Effect of Type of Tooth and Restoration Class and Size, J Dent Res 59:1497-1500.

10.

Mahler, D.B. ; Terkla, L.G. ; Van Eysden, J. ; and Reis-Bick, M.H. (1970): Marginal Fracture vs. Mechanical Properties of Amalgam, J Dent Res 49:1452-1457.

11.

Osborne, J.W. and Gale, E.N. (1979): Failure Rate of Margins of Amalgam with a High Content of Copper, Oper Dent 4:2-8.

12.

Osborne, J.W. and Gale, E.N. (1981): Failure at the Margin of Amalgams as Affected by Cavity Width, Tooth Position, and Alloy Selection, J Dent Res 60:681-685.

13.

Osborne, J.W. ; Gale, E.N. ; Chew, C.L. ; Rhodes, B.F. ; and Phillips, R.W. (1978a): Clinical Performance and Physical Properties of Twelve Amalgam Alloys, J Dent Res 57:983-988.

14.

Osborne, J.W. ; Leinfelder, K.F. ; Gale, E.N. ; and Sluder, T.B. (1980): Two Independent Evaluations of Ten Amalgam Alloys , J Prosthet Dent 43:622-626.

15.

Osborne, J.W. ; Norman, R.D. ; Chew, C.L. ; Osborne, P.K. ; and Setcos, J. (1989a): Clinical Evaluation of Nine High Copper Amalgams: A 13-year Assessment, J Dent Res 68:997, Abst. No. 1045.

16.

Osborne, J.W. ; Norman, R.D. ; Chew, C.L. ; Setcos, J. ; and Williams, K. (1989b): Long-term Clinical Assessment of Amalgam Restorations , J Dent Res 68:189, Abst. No. 57.

17.

Osborne, J.W. ; Phillips, R.W. ; Gale, E.N. ; and Binon, P.P. (1976): Three-year Clinical Comparison of Three Amalgam Alloy Types Emphasizing an Appraisal of the Evaluation Methods Used, J Am Dent Assoc 93:784-789.

18.

Osborne, J.W. ; Winchell, P.G. ; and Phillips, R.W. (1978b): A Hypothetical Mechanism by which Creep causes Marginal Failure of Amalgam Restorations, J Indiana Dent Assoc 57:16-17.

19.

Phillips, R.W. (1982): Skinner's Science of Dental Materials, Philadelphia: W.B. Saunders, pp. 350-351.

20.

Williams, P.T. and Cahoon, J.R. (1989): Amalgam Marginal Breakdown Caused by Creep Fatigue Rupture, J Dent Res 68 :1188-1193.

Relationship of Restoration Width,Tooth Position,and Alloy to Fracture at the Margins of 13- to 14-year-old Amalgams

Abstract

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