TY - JOUR
T1 - Fracture resistance of four different restorations for cuspal replacement
AU - Segura, A.
AU - Riggins, R.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1999/12
Y1 - 1999/12
N2 - The purpose of this study was to compare the fracture resistance of four posterior restorations involving an entire cusp replacement. Four groups were established, each containing eight caries-free mandibular molars, similar in size and anatomic form. A mesio-occlusal preparation including the lingual cusp was prepared on all teeth. Group A were restored with a pin-retained amalgam. Group B were restored with amalgam and a meta adhesive. Group C were restored with a composite resin with a beta-glass quartz insert. Group D were restored with composite resin and a HEMA adhesive. All specimens were mounted in acrylic and stored in artificial saliva for 30 days. Each specimen was loaded in compression at a 90° angle in an Instron testing machine with a crosshead speed of 0.5 cm/min. Results demonstrated the mean (SD) failure loads in kilograms for each group to be: A, 1155 (388); B, 1232 (436); C, 1345 (375); D, 1595 (373). Analysis of variance indicated no significant difference among groups at P < 0.05. Although the values for the composite resin restoration with the adhesive were higher than the other restorative techniques.
AB - The purpose of this study was to compare the fracture resistance of four posterior restorations involving an entire cusp replacement. Four groups were established, each containing eight caries-free mandibular molars, similar in size and anatomic form. A mesio-occlusal preparation including the lingual cusp was prepared on all teeth. Group A were restored with a pin-retained amalgam. Group B were restored with amalgam and a meta adhesive. Group C were restored with a composite resin with a beta-glass quartz insert. Group D were restored with composite resin and a HEMA adhesive. All specimens were mounted in acrylic and stored in artificial saliva for 30 days. Each specimen was loaded in compression at a 90° angle in an Instron testing machine with a crosshead speed of 0.5 cm/min. Results demonstrated the mean (SD) failure loads in kilograms for each group to be: A, 1155 (388); B, 1232 (436); C, 1345 (375); D, 1595 (373). Analysis of variance indicated no significant difference among groups at P < 0.05. Although the values for the composite resin restoration with the adhesive were higher than the other restorative techniques.
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U2 - 10.1046/j.1365-2842.1999.00476.x
DO - 10.1046/j.1365-2842.1999.00476.x
M3 - Article
C2 - 10620155
AN - SCOPUS:0033251824
SN - 0305-182X
VL - 26
SP - 928
EP - 931
JO - Journal of Oral Rehabilitation
JF - Journal of Oral Rehabilitation
IS - 12
ER -