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Park, Kim, Kim, Kim, and Kim: A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants
Original Article
The Ewha Medical Journal

The Ewha Medical Journal 2012; 35(1): 26-31.

Published online: 31 March 2012

DOI: https://doi.org/10.12771/emj.2012.35.1.26

A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants

Mi Jung Park1, Myung-Rae Kim1, 2, Ji-Youn Kim1, 2, Ye-Mi Kim3, Sun-Jong Kim1, 2

1Department of Implant Dentistry, Graduate School of Clinical Dentistry, Ewha Womans University, Seoul, Korea.

2Division of Oral and Maxillofacial Surgery, Department of Dentistry, Ewha Womans University School of Medicine, Seoul, Korea.

3Division of Conservative Dentistry, Department of Dentistry, Ewha Womans University School of Medicine, Seoul, Korea.

Corresponding author: Sun-Jong Kim, Division of Oral and Maxillofacial Surgery, Department of Dentistry, Ewha Womans University School of Medicine, 1071 Anyangcheon-ro, Yangcheon-gu, Seoul 158-710, Korea. Tel: 82-2-2650-5631, Fax: 82-2-2650-5764, sjsj7777@ewha.ac.kr

Received 3 January 2012       Accepted 20 February 2012

Copyright © 2012. Ewha Womans University School of Medicine

Abstract

Objectives

This study was performed to evaluate whether there is the difference of graft height changes in radiographic evaluation in single implants and multiple implants after maxillary sinus floor augmentation with an auto-xenograft mixture.

Methods

The study group comprised 29 patients (16 men, 13 women; mean age, 56.5±12.4 years; range, 27 to 87 years) treated at the implant clinic of the Ewha Womans University Mokdong Hospital. They were treated with the sinus floor augmentation of lateral window technique and simultaneous placement of dental implants. Their implants have been evaluated for 42.4±10.5 months. To evaluate the height of grafted material, the real implant length was compared with that of panoramic radiography evaluated by a digital caliper (PACS program), and then the real height of grafted material was assumed. SPSS 19.0 was used in statistical analysis. Wilcoxon singed rank test was utilized for P value and Mann-Whitney for statistical significance in the changes of grafted height between single implants and multiple implants. The level of statistical significance was defined as P<0.001.

Results

The evaluated graft height in single implants' group decreased to 0.60±0.54 mm at the time of delivery (after 7.5 months, P=0.001), in multi-unit implants' group to 0.96±0.84 mm (after 6.5 months, P<0.001). The evaluated graft height in single implants' group decreased to 1.11±0.75 mm at the last follow-up (after 43.5 months, P=0.001), in multi-unit implants' group to 1.52±0.99 mm (after 41.8 months, P<0.001). Mann-Whitney test was used for the difference between single implants and multi-unit implants. There was no difference in two groups at the time of delivery and the last follow-up (P>0.001).

Conclusion

There was no statistical significance of radiographic graft height after maxillary sinus floor augmentation between single implants and multiple implants.

Keywords: Auto-xenograft mixture, Sinus augmentation, Panorama, Radiographic evaluation

Figures and Tables

Table 1
The time of delivery and the last follow-up
emj-35-26-i001

Values are presented as mean±SD (range).

Table 2
Number of implants in the posterior maxilla
emj-35-26-i002

Values are presented as no (%).

Table 3
Graft height at the time of surgery and delivery
emj-35-26-i003

Values are presented as mean±SD.

Table 4
Graft height at the time of surgery and last follow-up
emj-35-26-i004

Values are presented as mean±SD.

References

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