Management of short clinical crowns by utilizing horizontal groove retentive technique in crown/tooth or both with different luting cements – An analysis on extracted teeth

Haritha, J; Rao, M Reddi Narasimha; Padmaja, B Indira; Reddy, None Narendranath; Babu, N. Ramesh; Karthik, K.

doi:10.4103/jfmpc.jfmpc_939_19

Cited by 1 publication

(1 citation statement)

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“…However, the study by Vinaya et al [ 21 ] showed contrasting results when they compared the proximal grooves and the boxes and concluded that the groove provided a statistically significant increase in retention, compared with the boxes. In the study by Haritha et al, the addition of 1 horizontal groove on either side of a prepared tooth significantly increased the retention of the crown [ 40 ]. The boxes and the grooves prepared in the present study were vertically oriented.…”

Section: Discussionmentioning

confidence: 99%

Impact of Auxiliary Features on Retention of Short Dental Crowns: An In-Vitro Analysis of Box and Groove Preparations

Sayed,

Porwal,

Hamdi

et al. 2024

Med Sci Monit

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Background Several auxiliary features have been proposed to achieve sustainable retention for short-prepared dental crowns; however, achieving retention is challenging. This study aimed to assess the impact of increased total occlusal convergence and auxiliary preparation factors like box and groove on the retention form of short tooth preparations. Material/Methods Eighty resin machine-milled dies with a height of 3 mm and a deep chamfer margin of 1 mm were prepared to mimic the short-prepared molar. Initially, 2 teeth were prepared following the guidelines, and the total occlusal convergence was kept at 10° and 20°, respectively. Auxiliary features such as the proximal box and buccal groove were prepared on separate 20° dies. Eighty dies were prepared with 10 samples each for 10°, 20°, 20° with proximal box and 20° with buccal groove for zirconia (n=40) and metal crowns (n=40). Cementation was done with glass ionomer luting cement, and a pull-off test was conducted. Data were analyzed using one-way analysis of variance and post hoc fisher least significant difference test (P <0.05). Results The highest mean was observed in the proximal box group with the metal crown (14.59), and the lowest in the group with 20° zirconia crowns (9.12). Within groups, the highest retentive values were found for the 20° taper with proximal box preparation; the lowest was for the 20° taper group. Conclusions Within the study limitations, it could be concluded that incorporating a proximal box or buccal groove in short tooth preparations with an increased total occlusal convergence improved retentive values.

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Section: Discussionmentioning

confidence: 99%