Journal article
A Retrospective, Multicenter, Cross-Sectional Case Series Study Evaluating Outcomes of CAD/CAM Abutments on Implants from Four Manufacturers: 4 Year Mean Follow-up
The International journal of oral and maxillofacial implants, Vol.36(5), pp.966-976
09/01/2021
DOI: 10.11607/jomi.8840
PMID: 34698723
Abstract
Purpose: To evaluate the clinical, radiographic, and prosthetic outcomes of a single custom CAD/CAM abutment system on implants from four manufacturers, with a mean clinical service of 4 years in a retrospective, multicenter case series study. Materials and Methods: Adult subjects (n = 142) previously restored with titanium or gold-shaded titanium nitride custom CAD/CAM abutments (Atlantis, Dentsply Sirona; n = 259) connected to implants from four different manufacturers (Dentsply Sirona Implants [AT], Biomet 3i [BM], Nobel Biocare [NB], Straumann [ST]), irrespective of implant-abutment interface, and replacing one or more teeth in any position were recalled for a single-visit examination by calibrated investigators at six university clinics. The primary outcomes evaluated included abutment success and survival; secondary outcomes included assessment of papillae fill, probing pocket depth (PD), bleeding on probing (BOP), marginal bone levels (MBLs), and patient-reported outcome measures (PROMs). Results: Two-hundred fifty-five (98.5%) abutments supported cement-retained restorations, and four (1.5%) abutments supported screw-retained restorations. Forty-two patients had 64 AT implants (25%), 31 patients had 61 BM implants (24%), 26 patients had 50 NB implants (19%), and 43 patients had 84 ST implants (32%). The overall implant-CAD/CAM abutment success rate was 92.66% (95% CI: 88.78%, 95.53%) for all implants examined, and the survival rate was 98.84% (95% CI: 96.65%, 99.76%) for all implants evaluated. The Jemt papillae index demonstrated a minimum of at least 50% to complete fill of the interproximal papillae in 65.0% of sites. PDs had a median value of 3.0 mm, and BOP was present on 19% of abutment surfaces. Mean MBL changes from the time of placement to exam were-0.24 +/- 0.99 mm (-4.9 to 2.3; P = .058) for mesial sites and-0.32 +/- 0.96 mm (-4.9 to 2.1; P = .000) for distal sites. PROMs expressed 93% of patients reporting good to very good masticatory function, 97% of patients reporting being satisfied or very satisfied with their esthetic outcomes, and 94% of patients indicating that they were satisfied or very satisfied with their overall implant-restorative outcomes. Conclusion: This retrospective, multicenter clinical study of FDA 510k-approved titanium CAD/CAM abutments of a single manufacturer on multiple implant systems demonstrated high levels of success and survival as well as stable peri-implant tissue outcomes, reflected by overwhelmingly positive PROMs. Intl Oral Maxillofac Implants 2021;36:966-976. doi: 10.11607/jomi.8840
Details
- Title: Subtitle
- A Retrospective, Multicenter, Cross-Sectional Case Series Study Evaluating Outcomes of CAD/CAM Abutments on Implants from Four Manufacturers: 4 Year Mean Follow-up
- Creators
- Christopher A. Barwacz - Univ Iowa, Coll Dent, Dept Family Dent, Iowa City, IA 52242 USAKumar C. Shah - Univ Calif Los Angeles, Sch Dent, Div Adv Prosthodont, Los Angeles, CA 90024 USANurit Bittner - Columbia UniversityWilliam Parker - Nova Southeastern UniversityToni T. Neumeier - University of AlabamaGhadeer N. Thalji - Univ Illinois, Coll Dent, Dept Restorat Dent, Chicago, IL USAIngeborg J. De Kok - UNC Sch Dent, Div Prosthodont, Dept Restorat Sci, Chapel Hill, NC USA
- Resource Type
- Journal article
- Publication Details
- The International journal of oral and maxillofacial implants, Vol.36(5), pp.966-976
- Publisher
- Quintessence Publishing Co Inc
- DOI
- 10.11607/jomi.8840
- PMID
- 34698723
- ISSN
- 0882-2786
- eISSN
- 1942-4434
- Number of pages
- 16
- Grant note
- Dentsply Sirona Implants
- Language
- English
- Date published
- 09/01/2021
- Academic Unit
- Family Dentistry
- Record Identifier
- 9984367729702771
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