Influence of different tooth types on the bond strength of two orthodontic adhesive systems

Adhesive systems are selected based on their bond strengths achieved while testing in laboratories. These bond strengths can predict the longevity of a restoration to some extent. There were several discrepancies in the reported bond strengths. To critically review the reliability of macro-bond strength tests used to evaluate resin-tooth interface. Relevant literature published between January 1983 and May 2013 was collected from PubMed database, Google scholar, and hand-searched journals of Conservative Dentistry, Endodontics and Dental materials. Variables that influence the test outcome are categorized into substrate-related factors, factors related to specimen properties, preparation of specimens, and test methodology. Impact of these variables on the test outcome is critically analyzed. There is lack of a standard format for reporting the bond strength tests, which could lead to misinterpretation of the data and bonding abilities of adhesives.

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“…[44] To obtain reliable results in enamel bond strength studies, the same tooth type from the upper or lower arches should be used.…”

Section: Variables Influencing Macro-bond Strength Test Resultsmentioning

confidence: 99%

Validity of bond strength tests: A critical review: Part I

et al. 2014

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“…Regarding the arch location, it is unclear why dentists were more likely to change the restorative material when the original restoration was an amalgam and the tooth was located in the maxillary arch. Even though some studies discussed that tooth type and arch location had significant differences in bond strength - with lower bond strength forces on maxillary molar teeth than on mandibular molar teeth 53,54 - there have been no clinical studies to substantiate those findings.…”

Section: Discussionmentioning

confidence: 99%

Restorative material and other tooth-specific variables associated with the decision to repair or replace defective restorations: Findings from The Dental PBRN

Gordan

Riley

Worley

et al. 2012

Journal of Dentistry

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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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“…Oztürk et al8 evaluated the influence of different tooth types on the bond strength of orthodontic adhesives, finding no significant difference between canines and molars. Several authors9-11 used molars instead of premolars to evaluate the SBS of orthodontic brackets.…”

Section: Discussionmentioning

confidence: 99%

Effects of contamination by either blood or a hemostatic agent on the shear bond strength of orthodontic buttons

2013

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ObjectiveTo evaluate the effects of contamination by either blood or a hemostatic agent on the shear bond strength (SBS) of orthodontic buttons.MethodsWe used 45 freshly extracted, non-carious, impacted third molars that were divided into 3 groups of 15. Each tooth was etched with 37% phosphoric acid gel for 30 s. Human blood or the blood stopper agent was applied to the tooth surface in groups I and II, respectively. Group III teeth were untreated (controls). Orthodontic buttons were bonded to the teeth using light-curing composite resin. After bonding, the SBS of the button was determined using a Universal testing machine. Any adhesive remaining after debonding was assessed and scored according to the modified adhesive remnant index (ARI). ANOVA with post-hoc Tukey's test was used to determine significant differences in SBS and Fisher's exact test, to determine significant differences in ARI scores among groups.ResultsANOVA indicated a significant difference between groups (p < 0.001). The highest SBS values were measured in group III (10.73 ± 0.96 MPa). The SBS values for teeth in groups I and II were significantly lower than that of group III (p < 0.001). The lowest SBS values were observed in group I teeth (4.17 ± 1.11 MPa) (p < 0.001).ConclusionsContamination of tooth surfaces with either blood or hemostatic agent significantly decreased the SBS of orthodontic buttons. When the contamination risk is high, it is recommended to use the blood stopper agent when bonding orthodontic buttons on impacted teeth.

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Influence of different tooth types on the bond strength of two orthodontic adhesive systems

Cited by 24 publications

References 25 publications

Validity of bond strength tests: A critical review: Part I

Validity of bond strength tests: A critical review: Part I

Restorative material and other tooth-specific variables associated with the decision to repair or replace defective restorations: Findings from The Dental PBRN

Effects of contamination by either blood or a hemostatic agent on the shear bond strength of orthodontic buttons

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