Effect of method of caries induction on aged resin-dentin bond of primary teeth

BMC Oral Health

Daniela Prócida Raggio²  Josimeri Hebling¹  Hérica Adad Ricci¹  Tamara Kerber Tedesco²  Ana Flávia Bissoto Calvo²  Tathiane Larissa Lenzi² 

[1] Department of Orthodontics and Pediatric Dentistry, Araraquara School of Dentistry, Universidade Estadual Paulista (Unesp), Rua Humaitá 1680, Araraquara, 14801-903, SP, Brazil;Department of Pediatric Dentistry, School of Dentistry, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2227 – Cidade Universitária, São Paulo 05508-000, SP, Brazil

关键词: Longevity;    Microbiology;    pH-cycling;    Artificial caries;    Caries-affected dentin;   

Others  :  1218470
DOI  :  10.1186/s12903-015-0049-z

 received in 2014-12-27, accepted in 2015-05-19,  发布年份 2015

【 摘 要 】

Background

To investigate the influence of chemical and microbiological methods of caries induction on bond degradation of adhesive systems to primary dentin.

Methods

Flat dentin surfaces from 36 primary molars were assigned to three groups (n = 12) according to method to induce caries-affected dentin: (1) control (sound dentin); (2) pH-cycling; and (3) microbiological caries induction model. Teeth were submitted to caries induction for 14 days for both methods, and the sound dentin was stored in distilled water during the same period. Specimens from each experimental group were then randomly reassigned to two subgroups (n = 6) according to the adhesive system tested: two-step etch-and-rinse adhesive (Adper Single Bond 2 - SB) or two-step self-etch system (Clearfil SE Bond - CSEB). Composite buildups were constructed and sectioned to obtain bonded sticks to be subjected to microtensile (μTBS) testing immediately or after 12 months of water aging. The μTBS means were analyzed by three-way repeated measures ANOVA and Tukey’s tests (α = 0.05).

Results

The μTBS values obtained to artificially-created caries-affected dentin were lower compared with sound dentin, but were not affected by method of caries induction. Water storage for 12 months reduced bond strengths, except to CSEB bonded to sound dentin.

Conclusion

Chemical and microbiological methods affect similarly the stability of resin-dentin bonds in primary teeth.

【 授权许可】

   
2015 Lenzi et al.

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