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According to the measurement of the average voxel values in this study, a significant difference was seen

Discussion : intraosseous stability and healing period for dental implants (6)

author: Shinya Homma,Yasushi Makabe,Takuya Sakai,Kenzou Morinaga,Satoru Yokoue,Hirofumi Kido, Yasutomo Yajima | publisher: drg. Andreas Tjandra, Sp. Perio, FISID

According to the measurement of the average voxel values in this study, a significant difference was seen between the high IT group and the low/medium IT group, but no significant difference was found between the low and medium IT groups (Fig. 7). Specimens showing IT ≥ 40 N cm were thought to have a good bone quality, and voxel values at each part of the implant (neck, middle apex) were compared between groups with IT < 40 (combined low and medium IT groups) and ≥ 40 (high IT group) (Fig. 8). The results suggested that the neck and apex parts in the high IT group showed significantly higher voxel values than the middle and apex parts of the low/medium IT group.

Using a MSCT system for preoperative diagnosis of bone quality, classified as five stages according to CT attenuation, and detailed diagnosis was performed for the whole treatment area. In this study, no significant difference was found when bone quality was compared between the three different IT groups, but when comparisons were made between two groups (low/medium vs high), significant differences were observed between groups and also between measurement sites (Figs. 6 and 7). Diagnosis of bone quality using CBCT does not seem as detailed as results from MSCT, but the diagnosis of whether bone quality is sufficient appears feasible.

CBCT systems offer many advantages over MSCT systems, including low exposure doses, high resolution, reduction of metal artifacts, ease of installation, and utility as a diagnostic tool in implant treatment. Due to the expanded utility of CBCT systems for dental implant diagnosis, the establishment of techniques for diagnosing bone quality by CBCT is necessary.

Conclusions

The purpose of this study was to evaluate the relationship between the insertion torque value and the ISQ value at the implant treatment using the current rough-surfaced implant. As a result, no significant relationship was found between the insertion torque value and the ISQ value. Also, it was suggested that the ISQ value was considered to be an important indicator for observing the treatment state of the implant. In addition, it was considered that there is a possibility that the early loading protocol can be applied to the implant body used in this study.

Abbreviations

CBCT:

Cone beam CT

CT:

Computed tomography

DICOM:

Digital Imaging and Communications in Medicine

ISQ:

Implant stability quotient

IT:

Insertion torque

MSCT:

Multi-slice CT

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