Peri-implant bone reactions at delayed and immediately loaded implants

an experimental study

Se Hoon Kim, Byungho Choi, Jingxu Li, Hansung Kim, Chang Yong Ko, Seung Mi Jeong, Feng Xuan, Seoung Ho Lee

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Objective: The aim of this study was to compare the peri-implant bone reactions of implants subjected to immediate loading with those subjected to delayed loading. Study design: In 6 mongrel dogs, bilateral edentulated flat alveolar ridges were created in the mandible. After 3 months of healing, 1 implant was placed in each side. On one side of the mandible, the implant was loaded immediately with a force of 20 N that was applied at a 120° angle from the tooth's longitudinal axis at the labial surface of the crown for 1800 cycles per day for 10 weeks. On the opposite side, after a delay of 3 months to allow osseointegration to take place, the implant was loaded with the same force used for the immediately loaded implant. Ten weeks after loading, microscopic computerized tomography at the implantation site was performed. Osseointegration was calculated as the percentage of implant surface in contact with bone. Bone height was measured in the peri-implant bone. Results: The mean osseointegration was greater (65.5%) for the delayed-loading implants than for the immediately loaded implants (60.9%; P < .05). The mean peri-implant bone height was greater (10.6 mm) for the delayed-loading implants than for the immediately loaded implants (9.6 mm; P < .05). Conclusion: The results indicate that when implants are immediately loaded, the immediate loading may decrease both osseointegration of dental implants and bone height.

Original languageEnglish
Pages (from-to)144-148
Number of pages5
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology
Volume105
Issue number2
DOIs
Publication statusPublished - 2008 Feb 1

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Experimental Implants
Osseointegration
Bone and Bones
Mandible
Alveolar Process
Dental Implants
Lip
Crowns
Tooth
Tomography
Dogs

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology
  • Dentistry(all)

Cite this

Kim, Se Hoon ; Choi, Byungho ; Li, Jingxu ; Kim, Hansung ; Ko, Chang Yong ; Jeong, Seung Mi ; Xuan, Feng ; Lee, Seoung Ho. / Peri-implant bone reactions at delayed and immediately loaded implants : an experimental study. In: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology. 2008 ; Vol. 105, No. 2. pp. 144-148.
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Peri-implant bone reactions at delayed and immediately loaded implants : an experimental study. / Kim, Se Hoon; Choi, Byungho; Li, Jingxu; Kim, Hansung; Ko, Chang Yong; Jeong, Seung Mi; Xuan, Feng; Lee, Seoung Ho.

In: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology, Vol. 105, No. 2, 01.02.2008, p. 144-148.

Research output: Contribution to journalArticle

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N2 - Objective: The aim of this study was to compare the peri-implant bone reactions of implants subjected to immediate loading with those subjected to delayed loading. Study design: In 6 mongrel dogs, bilateral edentulated flat alveolar ridges were created in the mandible. After 3 months of healing, 1 implant was placed in each side. On one side of the mandible, the implant was loaded immediately with a force of 20 N that was applied at a 120° angle from the tooth's longitudinal axis at the labial surface of the crown for 1800 cycles per day for 10 weeks. On the opposite side, after a delay of 3 months to allow osseointegration to take place, the implant was loaded with the same force used for the immediately loaded implant. Ten weeks after loading, microscopic computerized tomography at the implantation site was performed. Osseointegration was calculated as the percentage of implant surface in contact with bone. Bone height was measured in the peri-implant bone. Results: The mean osseointegration was greater (65.5%) for the delayed-loading implants than for the immediately loaded implants (60.9%; P < .05). The mean peri-implant bone height was greater (10.6 mm) for the delayed-loading implants than for the immediately loaded implants (9.6 mm; P < .05). Conclusion: The results indicate that when implants are immediately loaded, the immediate loading may decrease both osseointegration of dental implants and bone height.

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