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Impact of abutment geometry on early implant marginal bone loss. A double-blind, randomized, 6-month clinical trial

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Impact of abutment geometry on early implant marginal bone loss. A double-blind, randomized, 6-month clinical trial

dc.contributor.author	Pérez Sayans, Mario
dc.contributor.author	Castelo Baz, Pablo
dc.contributor.author	Penarrocha Oltra, David
dc.contributor.author	Seijas Naya, Flavio
dc.contributor.author	Conde Amboage, Mercedes
dc.contributor.author	Somoza Martín, José M.
dc.date.accessioned	2023-06-21T11:07:39Z
dc.date.available	2023-06-22T04:45:06Z
dc.date.issued	2022	es_ES
dc.identifier.citation	Pérez‐Sayans, M., Castelo‐Baz, P., Penarrocha‐Oltra, D., Seijas‐Naya, F., Conde‐Amboage, M., & Somoza‐Martín, J. M. (2022). Impact of abutment geometry on early implant marginal bone loss. A double‐blind, randomized, 6‐month clinical trial. Clinical Oral Implants Research, 33 (10), 1038-1048.	es_ES
dc.identifier.uri	https://hdl.handle.net/10550/88408
dc.description.abstract	Objectives The objective of this study was to analyze the impact of the abutment width on early marginal bone loss (MBL). Material and Methods A balanced, randomized, double-blind clinical trial with two parallel experimental arms was conducted without a control group. The arms were “cylindrical” abutment and “concave” abutment. Eighty hexagonal internal connection implants, each with a diameter of 4 × 10 mm, were placed in healed mature bone. The main variable was the peri-implant tissue stability, which was measured as MBL at 8 weeks and 6 months. Results The final sample consisted of 77 implants that were placed in 25 patients. 38 (49.4%) were placed using the cylindrical abutment, and the other 39 (50.6%) were placed using the concave abutment. The early global MBL of −0.6 ± 0.7 mm in the cylindrical abutment group was significantly higher than it was in the concave abutment group, in which the early global MBL was −0.4 ± 0.6 mm (p = .030). The estimated effect size (ES) was negative for the cylindrical abutment (ES = −1.3730, CI −2.5919 to −0.1327; t-value = −2.4893; p = .0139), therefore implying a loss of mean bone level, and it was positive for the concave abutment (ES = 2.8231; CI: 1.4379 to 4.2083; t-value = 4.0957; p = .0002), therefore implying an increase in the average bone level. Conclusions The concave abutments presented significantly less early MBL at 6 months post-loading than classical cylindrical abutments did.	es_ES
dc.language.iso	en	es_ES
dc.publisher	Wiley	es_ES
dc.subject	dental implant	es_ES
dc.subject	early marginal bone loss	es_ES
dc.subject	prostheses abutment width	es_ES
dc.subject	randomized clinical trial	es_ES
dc.subject	single tooth	es_ES
dc.title	Impact of abutment geometry on early implant marginal bone loss. A double-blind, randomized, 6-month clinical trial	es_ES
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::CIENCIAS TECNOLÓGICAS	es_ES
dc.identifier.doi	10.1111/clr.13985	es_ES
dc.accrualmethod	CI	es_ES
dc.embargo.terms	0 days	es_ES
dc.type.hasVersion	VoR	es_ES
dc.rights.accessRights	open access	es_ES