Assessment of the alveolar bone loss in fresh socket implant procedures with immediate implant loading via temporary preformed anatomical healing caps: Comparison of two different lengths of the implant collar

Roberto Crespi; Paolo Toti; Ugo Covani; Saverio Cosola; Giovanni Crespi; Giovanni-Battista Menchini-Fabris

doi:10.1016/j.jormas.2023.101582

Assessment of the alveolar bone loss in fresh socket implant procedures with immediate implant loading via temporary preformed anatomical healing caps: Comparison of two different lengths of the implant collar

J Stomatol Oral Maxillofac Surg. 2023 Dec;124(6S):101582. doi: 10.1016/j.jormas.2023.101582. Epub 2023 Jul 31.

Authors

Roberto Crespi¹, Paolo Toti², Ugo Covani¹, Saverio Cosola², Giovanni Crespi², Giovanni-Battista Menchini-Fabris³

Affiliations

¹ Versilia Hospital, Tuscan Stomatologic Institute, Lido di Camaiore, Italy; School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Rome, Italy.
² Versilia Hospital, Tuscan Stomatologic Institute, Lido di Camaiore, Italy.
³ Versilia Hospital, Tuscan Stomatologic Institute, Lido di Camaiore, Italy; School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Rome, Italy. Electronic address: editorial.activities@istitutostomatologicotoscano.it.

PMID: 37532082
DOI: 10.1016/j.jormas.2023.101582

Abstract

Purposes: The aim of the present clinical and radiologic retrospective study was to evaluate alveolar bone remodeling, in terms of alveolar width and peri‑implant bone level, two years after immediate implant positioning (with two different collar lengths, 0.8 mm and 2.0 mm) and loading of preformed healing cap. The Null hypothesis, H0 is: there was no difference between the two groups of implants.

Methods: Patients suffering from single-tooth edentulous areas in premolar, cuspid, and incisive areas were treated with fresh-socket implants and immediate preformed anatomical healing caps. Each final crown restoration was fabricated 3 months later. Primary outcomes (related to loss of the alveolar width and peri‑implant bone level) and secondary outcomes (testing adverse events, and measuring implant/prosthesis survival) were acquired and analyzed.

Results: A two-year retrospective analysis was conducted on 31 patients (19 female and 12 male), who underwent dental implant placement with implants having two different lengths of the collar: group A, 0.8 mm, and group B, 2.0 mm. As for the width of the alveolar crest, there was a negligible loss (less than half a millimeter) reported for both the groups, anyway reaching a statistical significance. Preoperative alveolar widths (9.50±0.67 mm and 9.45±0.90 mm, respectively for groups A and B) were different from the two-year alveolar widths (9.20±0.74 mm and 8.93±0.99 mm, respectively for groups A and B) with p-values ≤ 0.0049. When the marginal bone loss was assessed, significant differences were registered between the two procedure groups (-1.42±0.34 mm for group A and -0.11±0.15 mm for group B with a p-value < 0.0001).

Conclusions: The proper design of a healing abutment was very important to preserve the emergence profile immediately after extraction and implant placement. The length of the implant collar used with an immediate healing abutment appeared to affect the preservation of the alveolar crest with predictable final results.

Keywords: Collar length; Customized abutment; Dental abutment; Dental implant; Immediate placement.

MeSH terms

Alveolar Bone Loss* / etiology
Alveolar Bone Loss* / surgery
Dental Implantation, Endosseous / adverse effects
Dental Implantation, Endosseous / methods
Dental Implants* / adverse effects
Dental Implants, Single-Tooth*
Female
Follow-Up Studies
Humans
Male
Retrospective Studies
Tooth Socket / surgery
Treatment Outcome

Substances

Dental Implants