J Dent Rehabil Appl Sci.  2018 Jun;34(2):116-126. 10.14368/jdras.2018.34.2.116.

Factors associated with the survival rate and the marginal bone loss of dental implant over 7-years loading

• Choi JH
• Koh JK
• Kwon EY
• Joo JY
• Lee JY
• Kim HJ

• KMID: 2422653
• DOI: http://doi.org/10.14368/jdras.2018.34.2.116

Abstract

PURPOSE
The purpose of this study was to analyze the factors affecting the survival rate and the marginal bone level of dental implants that have functioned over 7-years.
MATERIALS AND METHODS
In 92 patients, 178 dental implants were included. Implant-related factors (diameter, length, prosthetic splint), patient-related factors (gender, smoking, plaque index, compliance to supportive periodontal therapy) and surgery-related factors (proficiency of surgeon, bone graft) were evaluated via clinical and radiographic examination. The marginal bone level was determined by intraoral standard radiography at the mesial and distal aspects of each implant using an image analysis software program.
RESULTS
The survival rate of all the implants was 94.94% and the marginal bone level was 0.89 ± 1.05 mm, these results are consistent with other studies that present long-term good clinical results. Implant length and plaque index among several factors were statistically significant for implant survival rate (P < 0.05). Smoking and the presence of regeneration surgery were statistically significant for the marginal bone level (P < 0.05).
CONCLUSION
Dental implant that have functioned over 7-years showed favorable long-term survival rates and marginal bone level. Implant length and plaque control should be considered for improving the long-term clinical results. It is needed that careful application of bone regeneration technique and smoking control for maintaining of marginal bone level.

Keyword

dental implants; survival rate

MeSH Terms

Bone Regeneration
Compliance
Dental Implants*
Humans
Radiography
Regeneration
Smoke
Smoking
Survival Rate*
Dental Implants
Smoke

Figure

• 

  Fig. 1 Distances from bone to implant (mesial, distal) were determined. A - B: Distance of marginal bone level (mesial) A - B’: Distance of marginal bone level (distal) A - C: Length of fixture (implant-abutment junction-apex) χ = (A - B) * Fixture length / (A - C) χ’ = (A - B’) * Fixture length / (A - C) Mean marginal bone level = (χ + χ’) / 2

Reference

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