Journal List > J Korean Assoc Oral Maxillofac Surg > v.36(4) > 1032409

Kim, Yeo, Yi, Kim, Moon, Jeon, Cho, and Yun: Multicentric retrospective clinical study on the clinical application of mini implant system

Abstract

Introduction

Mini-implant system is applicable to areas of narrow space and area requiring temporary loading support. The purpose of this study was to evaluate the clinical outcome of a mini-implant system as well as the application of mini-implant system in the dental clinical field.

Materials and Methods

The patients who had been operated from Jan 2007 to Dec 2007 in the four dental facility including Seoul National University Bundang Hospital were enrolled. To evaluate the factors associated with the clinical outcome, the patients were classified according to gender, age, area of surgery, type of implant, diameter and length of the implant, and the purpose of the mini-implant system application.

Results

From 147 implants, only three implants failed, one of them was for temporary loading. There were no serious surgical or prosthetic complications in this study.

Conclusion

An analysis of the preliminary data revealed a satisfactory clinical outcome. However, more long-term evaluation of narrow ridge type as well as the patient's satisfaction on the use of a provisional type mini-implant system is needed.

References

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Table 1.
Patients’ characteristics (n=69)
  Variables The number of cases (Implants)
Age (years) 10–19 1 (1)
20–29 4 (4)
30–39 7 (11)
40–49 9 (25)
50–59 23 (36)
60–69 18 (51)
70–79 7 (19)
Gender Male 39 (73)
Female 30 (74)
Medical history Healthy 48 (98)
Hypertension 10 (19)
Diabetes mellitus 8 (15)
Cerebrovascular attack history 2 (9)
Asthma 2 (6)
Alcoholism 2 (3)
Thyroid disease 1 (5)
Smoking No 56 (123)
Yes 13 (24)
Results Success 66 (146)
Failure 3 (3)
Complications No 61(141)
Osseointegration failure 3 (3)
Infection 3 (3)
Table 2.
Implant oriented data summary (n=147)
  Variables The number of implants (%)
Location Anterior maxilla 35 (23.8)
Posterior maxilla 22 (15.0)
Anterior mandible 73 (49.7)
Posterior mandible 17 (11.6)
Implant Type Narrow ridge 60 (40.8)
Provisional 67 (45.6)
Denture 20 (13.6)
Implant Length 10.0 mm 51 (34.7)
13.0 mm 84 (57.1)
15.0 mm 12 (8.2)
Implant Diameter 1.8 mm 14 (9.5)
2.5 mm 100 (68.0)
3.0 mm 33 (22.5)
Table 3.
The use of narrow ridge type implants (n=60)
Purpose Location Diameter (mm) Length (mm) Total Failed implants
1.8 2.5 3.0 10.0 13.0 15.0
Narrow ridge Mx. lateral incisor   3     3   3  
Mx. canine   3   1 2   3  
Mx. 1st premolar   2     1 1 2  
Mx. 2nd premolar     1   1   1  
Mn. central incisor   21 3   19 5 24 1
Mn. lateral incisor   5 14   19   19 1
Mn. canine     1   1   1  
Mn. 1st premolar   2   2     2  
Temporary loading Mx. central incisor   2     2   2  
Mx. 2nd premolar   1   1     1  
Mx. 1st molar   1   1     1 1
Mn. central incisor   1     1   1  
    41 19 5 49 6 60 3
Table 4.
The use of provisional type implants (n=67)
Purpose Location Diameter (mm) Length (mm) Total Failed implants
1.8 2.5 3.0 10.0 13.0 15.0
Temporary loading Mx. central incisor 2 7   6 2 1 9  
Mx. lateral incisor 1 2 1 3 1   4  
Mx. canine 2 8   7 3   10  
Mx. 1st premolar 2 2   1 3   4  
Mx. 2nd premolar 1 7   4 4   8  
Mx. 1st molar 1 2   2 1   3  
Mn. central incisor 1 6   5 1 1 7  
Mn. lateral incisor   1 2   3   3  
Mn. canine 1 4   5     5  
Mn. 1st premolar   1   1     1  
Mn. 2nd premolar 1 6   5 2   7  
Mn. 1st molar   4   2 2   4  
Mn. 2nd molar 1 1   1 1   2  
    13 51 3 42 23 2 67 0
Table 5.
The use of denture type implants (n=20)
Purpose Location Diameter (mm) Length (mm) Total Failed implants
1.8 2.5 3.0 10.0 13.0 15.0
Denture Mx. central incisor   1 1 1 1   2  
Mx. lateral incisor     1   1   1  
Mx. canine     1   1   1  
Mx. 1st premolar   2   2     2  
Mn. central incisor   2 3   3 2 5  
Mn. lateral incisor   2 2   3 1 4  
Mn. canine   2 2   3 1 4  
Mn. 1st premolar     1   1   1  
    9 11 3 13 4 20 0
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