Is the osseointegration of immediately and delayed loaded implants the same?—comparison of the implant stability during a 3‐month healing period in a prospective study |
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Authors: | Wei Zhou Chun Han Yunming Li Dehua Li Yingliang Song Yimin Zhao |
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Institution: | Department of Implant Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China; Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China; Department of Health Statistics, Fourth Military Medical University, Xi'an, China; Department of Prosthodontics, Qindu Hospital, School of Stomatology, the Fourth Military Medical University, Xi'an, China |
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Abstract: | Objectives: The objectives of the present study were (1) to compare the stability of delayed loaded (DL) and immediately loaded (IL) ITI SLA implants during the first 3 months of the healing period using resonance frequency analysis (RFA) and (2) to determine the factors that affect implant stability during the healing period. Materials and methods: To compare implant stability, RFA was performed on two groups of patients (12 patients received 25 IL implants and 47 patients received 79 DL implants) with a total 104 ITI SLA implants. Implant stability was measured directly by RFA at implant placement and consecutively once a week for 12 weeks. Statistical analyses were carried out to study implant stability differences between IL and DL groups. Results: One of the 25 implants in the IL group failed, and no implant was lost in the DL group. Implant stability between the IL and DL groups showed a statistically significant difference ( P <0.05). The mean implant stability quotient of all measured implants from implant insertion to 12 weeks was 72.88 ± 5.39 for the DL and 75.86 ± 3.60 for the IL types. The lowest stability was at 4 weeks for DL implants (mean: 71.58 ± 5.11) and 2 weeks for IL implants (mean: 71.33 ± 2.97). In both groups, bone types I and II showed higher implant stability than bone type III ( P <0.05). Conclusions: The findings of this study indicate that differences in osseointegration between IL and DL implants may be predicted according to differential implant stability. |
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Keywords: | delayed loaded (DL) immediately loaded (IL) resonance frequency analysis (RFA) |
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