A comparative assessment of the failure rate of molar tubes bonded with a self-etching primer and conventional acid-etching.
OBJECTIVE
Comparative assessment of the failure rate of molar tubes bonded to first and second molars with a self-etching primer and conventional acid-etching.


METHODS
Four hundred forty-four molar tubes (246 first molar tubes and 198 second molar tubes) were bonded, using a split-mouth design, on 62 patients (23 male, 39 female; mean age 13.7 years) with the 3M Transbond Plus self-etching primer combined with Transbond XT paste; or with conventional acid-etching, Orthosolo primer, and Enlight adhesive paste. First-time failures were recorded over a period of 15 months.


RESULTS
Bond failure per adhesive system, arch (maxilla-mandible), quadrant (left, right) and tooth (first or second molar) were studied. Statistical analysis using logistic regression modeling (alpha = .05) showed that the overall failure rate for the first and second molar tubes was 11% (8% with self-etching primer and 13% with conventional acid-etching). No significant difference was found between the 2 bonding methods. Tooth location and type showed statistically significant associations. Mandibular tubes showed a 3:1 probability for failure compared to maxillary tubes. Right-sided tubes demonstrated 3 times more failures when compared to left-sided tubes, and second molar tubes showed a 3-fold increase in failure.


CONCLUSIONS
Molar tube bonding with self-etching primer shows similar success rates to conventional acid-etching, whereas the mandibular right second molar presents the highest failure incidence.
Nikolaos
N
Pandis
Argyro
A
Polychronopoulou
Theodore
T
Eliades
D000134:Acid Etching, Dental / Q000379:methods*; D000293:Adolescent; D000328:Adult; D002648:Child; D001840:Dental Bonding; D017220:Dentin-Bonding Agents; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008963:Molar; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D009967:Orthodontic Appliances; D019279:Resin Cements; D017211:Treatment Failure
D017220:Dentin-Bonding Agents; C418867:Enlight; C508972:OrthoSolo; D019279:Resin Cements; C429625:Transbond Plus Self-Etching Primer; C477790:Transbond XT