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Primary assessment of a self-adhesive Gutta-Percha material


Marending, M; Bubenhofer, S B; Sener, B; De-Deus, G (2013). Primary assessment of a self-adhesive Gutta-Percha material. International Endodontic Journal, 46(4):317-322.

Abstract

AIM: To evaluate a prototype gutta-percha material (Bio-Gutta), which is claimed to work without sealer because of its incorporated ultrafine bioactive glass particles, in terms of its induction of pH and calcium phosphate (CaP) precipitates, and its self-adhesiveness in root canals.
METHODOLOGY: Bio-Gutta was compared with conventional gutta-percha (GP, composition: 70 wt% ZnO, 30 wt% polyisoprene). Test and control materials (N = 3) were immersed in phosphate-buffered saline (PBS) at 37 °C for 30 days. The pH in the solution was monitored. Apparent CaP formation was assessed using scanning electron microscopy (SEM). The root canals of 33 single-rooted teeth were filled by vertical compaction of heated Bio-Gutta, 33 control canals were filled with vertically compacted GP without sealer. Push-out bond strengths associated with the filling materials in root cross-sections from middle root thirds was determined 1, 8, and 30 days after root filling (N = 11 per group). These values were compared between groups using one-way anova (α < 0.05).
RESULTS: Bio-Gutta induced a high pH in the PBS solution, which plateaued at values between 11.4 and 11.8. Apparent CaP crystals covered the Bio-Gutta material after 30 days of immersion in PBS, whilst no such structures were observed on GP. Both materials under investigation had similar initial push-out bond strength values (P > 0.05). The adherence of Bio-Gutta increased from day 1 to 8 and was significantly higher than that of conventional GP at 8 and 30 days (P < 0.05).
CONCLUSIONS: The experimental gutta-percha material under investigation was alkaline and caused CaP precipitates on its surface. It improved its adherence to the root canal wall within 1 week.

Abstract

AIM: To evaluate a prototype gutta-percha material (Bio-Gutta), which is claimed to work without sealer because of its incorporated ultrafine bioactive glass particles, in terms of its induction of pH and calcium phosphate (CaP) precipitates, and its self-adhesiveness in root canals.
METHODOLOGY: Bio-Gutta was compared with conventional gutta-percha (GP, composition: 70 wt% ZnO, 30 wt% polyisoprene). Test and control materials (N = 3) were immersed in phosphate-buffered saline (PBS) at 37 °C for 30 days. The pH in the solution was monitored. Apparent CaP formation was assessed using scanning electron microscopy (SEM). The root canals of 33 single-rooted teeth were filled by vertical compaction of heated Bio-Gutta, 33 control canals were filled with vertically compacted GP without sealer. Push-out bond strengths associated with the filling materials in root cross-sections from middle root thirds was determined 1, 8, and 30 days after root filling (N = 11 per group). These values were compared between groups using one-way anova (α < 0.05).
RESULTS: Bio-Gutta induced a high pH in the PBS solution, which plateaued at values between 11.4 and 11.8. Apparent CaP crystals covered the Bio-Gutta material after 30 days of immersion in PBS, whilst no such structures were observed on GP. Both materials under investigation had similar initial push-out bond strength values (P > 0.05). The adherence of Bio-Gutta increased from day 1 to 8 and was significantly higher than that of conventional GP at 8 and 30 days (P < 0.05).
CONCLUSIONS: The experimental gutta-percha material under investigation was alkaline and caused CaP precipitates on its surface. It improved its adherence to the root canal wall within 1 week.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Preventive Dentistry, Periodontology and Cariology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:18 Dec 2013 08:07
Last Modified:16 Feb 2018 18:40
Publisher:Wiley-Blackwell
ISSN:0143-2885
OA Status:Closed
Publisher DOI:https://doi.org/10.1111/j.1365-2591.2012.02117.x
PubMed ID:22958051

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