Editorial Type:
Article Category: Other
 | 
Online Publication Date: 01 Oct 2012

Immediate Loading of Single Post-Extractive Implants in the Anterior Maxilla: 12-Month Results From a Multicenter Clinical Study

DDS,
DDS,
DDS,
DDS, and
MD
Page Range: 477 – 484
DOI: 10.1563/AAID-JOI-D-11-00058
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The purpose of the study was to evaluate survival and peri-implant bone levels of single, immediately loaded post-extractive implants in the anterior maxilla 12 months after implant placement. Thirty-six consecutive patients from 3 study centers were included in the study. The concerned sites were upper premolars, canines, and incisors. For each patient the following data were recorded: reason for tooth extraction, bone quality, implant size, and final insertion torque. Implants were placed using a flapless technique and immediately loaded with a nonoccluding temporary restoration. Final restorations were provided 4 months later. Peri-implant bone resorption was evaluated radiographically after 6 and 12 months. The average final insertion torque was 70.55 Ncm. One implant inserted in D3 quality bone with a 35-Ncm seating torque was lost. All other implants had a final insertion torque ranging between 50 and 80 Ncm. The average peri-implant bone loss was 0.437 and 0.507 mm at 6 and 12 months, respectively. All the sites maintained excellent papillae and peri-implant soft-tissue conditions. The resulting 1-year success rate was 97.2%. Immediate nonfunctional loading of single post-extractive implants in the anterior maxilla is a predictable treatment. And it seems that achieving high insertion torques by placing self-tapping/self-condensing implants in an underprepared osteotomy is favorable.

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  <sc>Figures 1–4.</sc>
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Figures 1–4.

Figure 1. Image of the dynamometric wrench used to measure the final insertion torque at implant placement. Figure 2. Preoperative periapical radiograph. Figure 3. Preoperative clinical view. Tooth #5 has to be extracted because of caries. Figure 4. After atraumatic extraction of the tooth, an implant was placed with flapless surgery based on prosthetic requirements. Figure 5. Clinical view of the provisional restoration refined, polished, and cemented. Figure 6. Bitewing X rays performed immediately after surgery. Figure 7. Buccal view of the definitive metal-ceramic restoration 12 months after surgery. Figure 8. Bitewing X rays taken 12 months after implant placement.


Contributor Notes

Corresponding author, e-mail: tommaso.grandi@unimore.it
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