Fracture resistance in non-vital teeth: absence of interproximal ferrule and influence of preparation depth in CAD/CAM endocrown overlays - an in vitro study
Autor/a
Barallat, Lucía
Arregui, María
FERNANDEZ-VILLAR, SANDRA
Paniagua, Blanca
Pascual La Rocca, Andres Matteo
Data de publicació
2022ISSN
1996-1944
Resum
There is ample evidence to support the use of endocrowns to restore endodontic teeth. However, the influence of the position of the interproximal margins on fracture strength has not yet been studied. The aim was to determine the relationship between the apicocoronal position of the interproximal restorative margins and fracture resistance in nonvital teeth restored with CAD/CAM endocrown overlays. Forty extracted human maxillary premolars were prepared for endocrown overlay restorations without ferrule on the interproximal aspects and classified according to the position of the interproximal restoration margins in relation to the alveolar crest: 2 mm (group A), 1 mm (group B), 0.5 mm (group C), and 0 mm (group D). Fracture strength was measured using a universal testing machine applying a compressive force to the longitudinal tooth axis. Group A had a mean fracture resistance of 859.61 (±267.951) N, group B 1053.9 (±333.985) N, group C 1124.6 (±291.172) N, and group D 780.67 (±183.269) N, with statistical differences between groups. Group C had the highest values for fracture strength compared to the other groups (p < 0.05). The location of the interproximal margins appears to influence the fracture resistance of CAD/CAM endocrown overlays. A distance of 0.5 mm between the interproximal margin and the alveolar crest was associated with increased fracture resistance.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
616.3 - Patologia de l'aparell digestiu. Odontologia
Paraules clau
Resistència a la fractura
Restauració de superposició
Endocronar
Virolla
Premolars
Resistencia a la fractura
Restauración de superposición
Endocorona
Contera
Premolares
Fracture resistance
Overlay restoration
Endocrown
Ferrule
Premolars
Pàgines
9
Publicat per
MDPI
Col·lecció
15; 2
Publicat a
Materials
Citació
Barallat, Lucía; Arregui, María; Fernandez-Villar, Sandra [et al.]. Fracture resistance in non-vital teeth: absence of interproximal ferrule and influence of preparation depth in CAD/CAM endocrown overlays - an in vitro study. Materials, 2022, 15(2), 436. Disponible en: <https://www.mdpi.com/1996-1944/15/2/436>. Fecha de acceso: 8 feb. 2022. DOI: 10.3390/ma15020436
Aquest element apareix en la col·lecció o col·leccions següent(s)
- Odontologia [242]
Drets
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