Oeschger, Corinne E.; Bosshardt, Dieter D.; Roehling, Stefan; Gahlert, Michael; Cochran, David L.; Janner, Simone F. M. (2020). Crestal bone response to loaded zirconia and titanium implants: a radiographic and histometric analysis in canines. Clinical oral investigations, 24(10), pp. 3609-3617. Springer-Verlag 10.1007/s00784-020-03235-2
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OBJECTIVES
To evaluate the crestal bone response to a two-piece zirconia implant compared with a control titanium implant using periapical radiographs (PAs) and histometry.
MATERIALS AND METHODS
Thirty zirconia and 30 titanium implants were placed in healed posterior mandibles of five canines. Full-ceramic single-tooth restorations were cemented after 6 weeks of healing. Three observers measured the distance between the implant shoulder and the crestal bone (DIB) at placement, loading, and harvesting after 4 or 16 weeks in function. The influence of implant material and loading time on DIB as well as the inter-observer agreement were analyzed. Additionally, histometric distance between implant shoulder and most coronal bone-to-implant contact (IS-cBIC) was compared with DIB.
RESULTS
Mean DIB values increased between 4 and 16 weeks of loading for both zirconia (from 1.66 to 2.25 mm; P < 0.0001) and titanium (from 1.81 to 1.95 mm; P = 0.06). Zirconia yielded mean IS-cBIC values of 2.18 mm and 2.48 mm (P < 0.001) and titanium 2.23 mm and 2.34 mm (P = 0.27) after 4 and 16 weeks, respectively. The raters reached an excellent intraclass correlation coefficient. PAs underestimated the bone loss on average by 0.39 mm.
CONCLUSIONS
Zirconia implants showed a greater increase of DIB during early healing and function than titanium.
CLINICAL RELEVANCE
Crestal peri-implant tissue dimensions may show more pronounced changes around two-piece zirconia implants during early healing. PAs may underestimate peri-implant bone loss.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Oral Surgery and Stomatology 04 Faculty of Medicine > School of Dental Medicine > Orthodontic Research |
UniBE Contributor: |
Oeschger-Unold, Corinne Evelyne, Bosshardt, Dieter, Janner, Simone |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1432-6981 |
Publisher: |
Springer-Verlag |
Language: |
English |
Submitter: |
Caroline Balz |
Date Deposited: |
03 Apr 2020 15:39 |
Last Modified: |
09 Feb 2024 00:25 |
Publisher DOI: |
10.1007/s00784-020-03235-2 |
PubMed ID: |
32034546 |
Uncontrolled Keywords: |
Crestal bone Dental implants Osseointegration Radiographic analysis Zirconia implants |
BORIS DOI: |
10.7892/boris.142339 |
URI: |
https://boris.unibe.ch/id/eprint/142339 |
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