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Histologic and histomorphometric evaluation of minicono abutment on implant surrounding tissue healing and bone resorption on implants placed in healed bone. An experimental study in dogs

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bioeng-10-03-013.pdf(1.31 MB)
Date
2023-08-14
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Authors
Calvo Guirado, José Luis ; Cabo Pastor, Marta Belén ; Martínez Martínez, Francisco ; Garcés Villalá, Miguel Ángel ; Carlos Villafranca, Félix de ; García Carrillo, Nuria ; Fernández Domínguez, Manuel
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Publisher
AIMS Press
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Cirugía, Pediatría y Obstetricia y Ginecología
DOI
https://doi.org/10.3934/bioeng.2023013
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info:eu-repo/semantics/article
Description
© 2023 the Author(s). This manuscript version is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0/ This document is the Published Manuscript version of a Published Work that appeared in final form in AIMS Bioengineering. To access the final edited and published work see https://doi.org/10.3934/bioeng.2023013
Abstract
The objective of this evaluation was to measure the width and length of connective tissue (CT) and crestal bone resorption (CBR) related to minicono® abutment inserted in conical connection dental implants, which were placed crestal and subcrestally in a dog's mandible. Materials and Methods Forty-eight Top DM implants with the same coronal diameter were placed at the crestal level, 1 mm (test 1 group) and 2 mm (test 2 group) positions underneath buccal-lingual bone crests. Dental implants used in the study were separated into three groups of 16 implants each. The implants were randomly inserted into healed bone after two months post-extraction sockets of three lower premolars, and first molar, bilaterally in six male fox hound dogs. One 3 mm minicono height abutment was connected to conical connection implants placed at the crestal level (control), 1 mm (test 1) and 2 mm (test 2) positions under buccal-lingual crests. Results All abutments and implants used were clinically and histologically integrated into the bone-soft tissue. Soft tissue behavior was observed at eight and 12 weeks in all test groups, displaying similar quantitative findings with significant differences (p > 0.05). However, crestal bone loss was significantly greater at the buccal side around that control group compared to the test 1 and 2 groups. The difference values between groups at the implant shoulder to the top of the lingual bone crest (IS-LBC) and the implant shoulder to the top of the buccal bone crest (IS-BBC) were significantly greater for the test 2 group in comparison with the other two groups (p < 0.05) at eight weeks. In addition, crestal bone resorption (CBR) increased in the crestal group at twelve weeks, but it was reduced for the test 1 and test 2 groups in implants placed sub-crestally (p < 0.05). Conclusions Crestal bone loss could be reduced using a 3 mm high abutment on implants submerged below the bone crest from 1 to 2 mm positions.
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Collar design , Implant placement , Crestal placement , Sub crestal placement soft tissue height , Minicono abutment , Transmucosal abutment
Citation
AIMS Bioengineering, 2023, Vol. 10, Issue 3, 183-201
URI
http://hdl.handle.net/10201/154285
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