Restorative material and other tooth-specific variables associated with the decision to repair or replace defective restorations: findings from The Dental PBRN
Available online 8 February 2012
Abstract
Objectives
Using
data from dentists participating in The Dental Practice-Based Research
Network (DPBRN), the study had 2 main objectives: (1) to identify and
quantify the types of restorative materials in the existing failed
restorations; and (2) to identify and quantify the materials used to
repair or replace those failed restorations. Methods: This
cross-sectional study used a consecutive patient/restoration recruitment
design. Practitioner-investigators recorded data on consecutive
restorations in permanent teeth that needed repair or replacement. Data
included the primary reason for repair or replacement, tooth surface(s)
involved, restorative materials used, and patient demographics.
Results
Data
for 9,875 restorations were collected from 7,502 patients in 197
practices for which 75% of restorations were replaced and 25% repaired.
Most of the restorations that were either repaired or replaced were
amalgam (56%) for which most (56%) of the material used was direct
tooth-colored. The restorative material was 5 times more likely to be
changed when the original restoration was amalgam (OR = 5.2, p<.001).
The likelihood of changing an amalgam restoration differed as a
function of the tooth type (OR = 3.0, p<.001), arch (OR = 6.6,
p<.001); and number of surfaces in the original restoration
(OR = 12.2, p<.001).
Conclusion
The
probability of changing from amalgam to another restorative material
differed with several characteristics of the original restoration. The
change was most likely to take place when (1) the treatment was a
replacement; (2) the tooth was not a molar; (3) the tooth was in the
maxillary arch; and (4) the original restoration involved a single
surface.
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