International Journal of Oral and Maxillofacial Surgery
Clinical PaperDental ImplantsRadiographic analysis of critical anatomical structures for pterygoid implant placement in Chinese patients with a severely atrophied maxilla
Section snippets
Study protocol
The cone beam computed tomography (CBCT) data of consecutive patients requiring implant rehabilitation of the posterior atrophied maxilla between January 2015 and December 2018 were obtained from the tomography database of Shanghai Ninth People’s Hospital. An access approval was obtained from the Ethics Board of Shanghai Ninth People’s Hospital and the Institutional Review Board of Shanghai Jiao Tong University to check the tomography data and files. Each file retrieved was assigned a number to
Results
A total of 100 severely atrophied maxillary sides in 86 patients (left maxillary side in 43 patients, right side in 29 patients, and bilateral in 14 patients) were eligible for inclusion in this study (Fig. 3). Of the 86 patients, 48 were male and 38 were female; their mean age was 59.3 ± 8.9 years (range 31–77 years). Virtual pterygoid implant placement failed in 33 out of the 100 maxillary sides. Among the 67 successfully placed virtual implants, 13-mm virtual implants were placed in four
Discussion
The pterygoid implant is considered an alternative option for posterior dental rehabilitation obviating the need for grafting. This option can shorten the treatment duration, reduce the cost, and avoid the risk of graft failure.20 Additionally, pterygoid implant placement eliminates the distal cantilever design, therefore supporting the biomechanical stress distribution. However, until recently, there has been no universal consensus for guiding the ideal position of pterygoid implant placement,
Funding
None.
Ethical approval
The study protocol was approved by the Ethics Committee of Shanghai Jiao Tong University, School of Medicine (Shanghai, China). All participants were informed of the research procedure and signed the participation consent agreement.
Competing interests
None.
Patient consent
Not required.
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Cited by (0)
- 1
Qiaoyu Zhang and Ahmed Abdelrehem are co-first authors.