Evaluation of microleakage in human, bovine and swine enamels

Abuabara, Allan; Santos, Alex José Souza dos; Aguiar, Flávio Henrique Baggio; Lovadino, José Roberto

doi:10.1590/s1806-83242004000400007

Cited by 24 publications

(31 citation statements)

References 15 publications

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“…Inconsistent recommendations were proposed regarding the use of bovine substrate as an alternative to human substrate in bonding/adhesive strength studies. Table 4 illustrates seven in vitro studies reviewed in this category (7,78,(82)(83)(84)(85)(86). Three of the seven studies found that microleakage values were higher in bovine compared to human substrates, both in enamel (7) and dentin (78,82).…”

Section: Dental Erosion/abrasion Studiesmentioning

confidence: 99%

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Bovine teeth as substitute for human teeth in dental research: a review of literature

2011

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The aim of this paper was to review in vitro and in situ studies that directly compared the use of bovine teeth as a substitute for human teeth in dental experiments. A PubMed search was conducted for papers published from 1953 to December 30, 2010 using the following keywords: "human bovine enamel" or "human bovine dentin" or "human bovine teeth". The abstracts of the studies resulting from the keyword search were read, and all papers that compared human and bovine teeth were fully read. Only original articles written in English and directly comparing human and bovine substrates were included in the review. The search was supplemented by manual searches of the reference lists from each identified paper. Out of 76 studies initially selected, 68 fulfilled the selection criteria for inclusion. The studies covered seven categories: dental morphology, chemical composition, physical properties, dental caries, dental erosion/abrasion, bonding/adhesive strength, and marginal microleakage. Inconsistent data exist regarding whether bovine teeth can be considered an appropriate substitute for human teeth in dental research. Morphological, chemical composition and physical property differences between the two substrates must be considered when interpreting results obtained from any experiment using bovine tooth substrate. (J Oral Sci 53, 273-282, 2011)

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Section: Dental Erosion/abrasion Studiesmentioning

confidence: 99%

“…Common examples are primate (5), bovine (6), swine (7,8), equine (9), and shark teeth (10). However, bovine teeth have been the most widely used substitute for human teeth in dental studies and their use has dramatically increased in the last 30 years.…”

Section: Introductionmentioning

confidence: 99%

Bovine teeth as substitute for human teeth in dental research: a review of literature

2011

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“…In vitro studies by Abuabara et al (2004) showed marginal leakages between composite material, glass-ionomer cement (GIC), and hard dental tissues (human, swine, and bovine teeth). Much larger marginal leakage was exhibited by samples with GIC than with a coposite aterial.…”

Section: Discussionmentioning

confidence: 99%

In vivo Evaluation of Marginal Microgaps of Sheep Incisors filled with Two Composite Materials

Figurová

Ledecký

Štvrtina³

2009

Acta Vet. Brno

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The aim of the study was to evaluate the marginal microgaps of two light-induced polymerization composite materials: Filtek P60 (3M ESPE) and Opticor New (Spofa Dental) in ovine teeth in vivo.The restorative materials were placed to type A-cavity to buccal surfaces of permanent teeth (Triadan system 301, 302, 303, 401, 402, 403). The variables of composite materials were evaluated in 3 groups of animals, 2 animals in each, at different time intervals (1, 6 and 9 months after beginning of the experiment). In various time intervals, 12 teeth per group were extracted under general injection anaesthesia, 6 teeth from each animal). Altogether 36 teeth were extracted throughout the experiment.During the experiment we observed neither cracks nor marginal discoloration in both Filtek P60 and Opticor New restorations. Retention of all restorations was 100%.Significant (P = 0.029 ANOVA) differences were observed in the dentin with Filtek P60 packable restorations which exhibited smaller marginal microgaps (OPTICOR NEW and dentin 11.09 , FILTEK P60 and dentin 5.64 μ). The ean size of icrogaps between dentin and the packable coposite aterial Filtek P60 was significantly lower (P = 0.029 ANOVA) in comparison with the microhybrid Opticor New composite restorations. These materials are suitable as permanent restoration of dental cervical caries in sheep and other herbivores, such as those kept in zoological gardens and companion animals. Light-cure filling, dentition, histology, restoration, sheep, experimentAt present, veterinary dentistry often deals with the issue of caries. Due to wrong feeding this disease is diagnosed especially in companion animals kept in apartments (Hale 1998;Capík 2007). Caries (caries dentinum) is a disease of hard dental tissues. It is a multifactorial disease (Vaško et al. 1994;Capík 2008). Advanced dental caries may result in indication for dental crown reconstruction using metal materials (Capík 2005). In stomatology practice, different types of restorations are used.The size of arginal leakages between a filling and cavity wall represents an iportant evaluation criterion of filling aterials in clinical stoatology. These icrogaps arise ainly due to a polyerization shock as well as the coefficient of linear theral expansion of the filling and hard dental tissues. In vitro study by Loguercio at al. (2004) evaluated these microleakages. Specimens were thermocycled (500 cycles between 5 to 55 °C, analogous to changes of cold and hot feed and ingestion of liquids) and immersed in 0.5% methylene blue. The packable composites (e.g. Filtek P60) showed lower polymerization shrinkage compared to the hybrid resin. Food as a negative factor of polymerization shrinkage of composites is described by Attin et al. (1995) at the neck area of a tooth by post-operative sensitivity. When comparing the thermal expansion, Pucklett et al. (1995) concluded that classical glass-ionomeric cements have the lowest thermal expansion. The composites, on the other hand, exhibited the highest thermal ex...

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“…Although bovine teeth have commonly been used in research on permeability, 8 adhesiveness, 9 morphology and microleakage 10 due to the difficulty in obtaining human permanent and deciduous teeth, 9 studies comparing the effects of different preparation systems on bovine teeth are still scarce.…”

Section: A B C Discussionmentioning

confidence: 99%

Effectiveness of high speed instrument and air abrasion on different dental substrates

Antunes

Pedro²,

Vieira³

et al. 2008

Braz. oral res.

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The aim of this study was to compare the effectiveness of high speed (HS) and air abrasion (AA) instruments on groups of teeth (deciduous, permanent, bovine), in terms of preparation time, topography and presence of smear layer. Each group consisted of 5 teeth that had their buccal/lingual surfaces prepared by using either HS or AA. All procedures were standardized and timed. The teeth were then sectioned and prepared for evaluation of both the topography and the presence of smear layer by scanning electron microscopy. As regards preparation time, HS yielded preparations 1.5 times quicker than AA did on the three types of dental substrates (Wilcoxon test, p < 0.05). In both techniques (KruskalWallis Test, p < 0.05) the preparation time was influenced by the dental substrate, particularly in deciduous teeth (Mann-Whitney test with Bonferoni's correction, p < 0.017), which required a longer preparation time.In the descriptive analysis of the topography, no difference was found between the substrates. Nonetheless, the different instruments used determined distinctive topographies. Both techniques produced a smear layer (χ 2 McNemar, p > 0.05) in all substrates, but with different formations. In conclusion, the HS instrument was found to be more rapid than the AA. No difference was found between the three dental substrates as regards both the topography and the presence of smear layer. The differences found in the present study were only in relation to the effects of each instrument used.

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Evaluation of microleakage in human, bovine and swine enamels

Cited by 24 publications

References 15 publications

Bovine teeth as substitute for human teeth in dental research: a review of literature

Bovine teeth as substitute for human teeth in dental research: a review of literature

In vivo Evaluation of Marginal Microgaps of Sheep Incisors filled with Two Composite Materials

Effectiveness of high speed instrument and air abrasion on different dental substrates

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