하악 구치부에 식립한 sintered porous surfaced implants의 후향적 다기관 연구 (A Retrospective Study of Sintered Porous-surfaced Dental Implants in Restoring the Edentulous Posterior Mandible: Up to Eight Years of Functioning)

서지정보

· 발행기관 : 대한치과의사협회
· 수록지 정보 : 대한치과의사협회지 / 47권 / 12호 / 823 ~ 829페이지
· 저자명 : 김우성, 안경미, 손동석, 정희승, 신임희

초록

Purpose : The aim of this study was to evaluate the surviva rate of sintered porous-surfaced implants placed in the edentulous posterior mandibles, in relation to implant length and diameter, crown-to-implant ratio, and types of prostheses, for a maximum of
eight years of functioning.
Material and Methods : The study group consisted of 43 partially edentulous patients who visited Catholic University Hospital
of Daegu and one private dental clinic. A total of 122 sintered porous-surfaced implants -- Endopore (Innova Life Sciences,
Toronto, Ontario, Canada) -- were placed in the edentulous posterior mandibles. Two diameter sizes (4.1㎜ and 5.0㎜) and four
lengths (5.0㎜, 7.0㎜, 9.0㎜, and 12.0㎜) were used. One hundred and three implants were splinted and 21 implants were nonsplinted.
The survival rates of the implants in relation to length, diameter, crown-to-implant ratio, and types of prostheses were
investigated. Statistical data were analyzed using SPSS Win.Ver 14.0 software with the Chi-square test.
Results : The survival rate of the 4.1mm diameter implants was 100% and 91.2% for the 5.0㎜ diameter implants. The survival rates
of the implants of differing diameters were found to be statistically different (p=0.005). The survival rates of both the 5.0㎜ and 7.0㎜
length implants were 100%. The survival rate of the 9.0㎜ length implants was 97.9% and for the 12.0㎜ length implants was 95.1%.
There was no statistical difference in survival rates for the differing lengths of implants. Of the 103 prostheses that were splinted, the
survival rate was 98.0%. The survival rate of splinted prostheses was higher than that of the non-splinted prostheses, but was found to
be not statistically different. There were no failed cases when the crown-to-implant ratio was under 1.0. When the crown-to-implant
ratio was between 1.0 and 1.5, the failure rate of the implants was 6.7%. No failure was recorded with the ratio range of 1.5 to 2.0.
Relative to the crown-to-implant ratio of 1.0, the failure rates were statistically different (p=0.048).
Discussion and Conclusion : The cumulative survival rate of the porous-surfaced implants placed in the edentulous posterior
mandibles was 97.5%. Short porous-surfaced implants showed satisfactory results after a maximum of nine years of functioning in
the edentulous posterior mandibles.

영어초록

Purpose : The aim of this study was to evaluate the surviva rate of sintered porous-surfaced implants placed in the edentulous posterior mandibles, in relation to implant length and diameter, crown-to-implant ratio, and types of prostheses, for a maximum of
eight years of functioning.
Material and Methods : The study group consisted of 43 partially edentulous patients who visited Catholic University Hospital
of Daegu and one private dental clinic. A total of 122 sintered porous-surfaced implants -- Endopore (Innova Life Sciences,
Toronto, Ontario, Canada) -- were placed in the edentulous posterior mandibles. Two diameter sizes (4.1㎜ and 5.0㎜) and four
lengths (5.0㎜, 7.0㎜, 9.0㎜, and 12.0㎜) were used. One hundred and three implants were splinted and 21 implants were nonsplinted.
The survival rates of the implants in relation to length, diameter, crown-to-implant ratio, and types of prostheses were
investigated. Statistical data were analyzed using SPSS Win.Ver 14.0 software with the Chi-square test.
Results : The survival rate of the 4.1mm diameter implants was 100% and 91.2% for the 5.0㎜ diameter implants. The survival rates
of the implants of differing diameters were found to be statistically different (p=0.005). The survival rates of both the 5.0㎜ and 7.0㎜
length implants were 100%. The survival rate of the 9.0㎜ length implants was 97.9% and for the 12.0㎜ length implants was 95.1%.
There was no statistical difference in survival rates for the differing lengths of implants. Of the 103 prostheses that were splinted, the
survival rate was 98.0%. The survival rate of splinted prostheses was higher than that of the non-splinted prostheses, but was found to
be not statistically different. There were no failed cases when the crown-to-implant ratio was under 1.0. When the crown-to-implant
ratio was between 1.0 and 1.5, the failure rate of the implants was 6.7%. No failure was recorded with the ratio range of 1.5 to 2.0.
Relative to the crown-to-implant ratio of 1.0, the failure rates were statistically different (p=0.048).
Discussion and Conclusion : The cumulative survival rate of the porous-surfaced implants placed in the edentulous posterior
mandibles was 97.5%. Short porous-surfaced implants showed satisfactory results after a maximum of nine years of functioning in
the edentulous posterior mandibles.

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