J Adv Prosthodont.  2014 Dec;6(6):521-527. 10.4047/jap.2014.6.6.521.

Alveolar ridge preservation of an extraction socket using autogenous tooth bone graft material for implant site development: prospective case series

• Kim YK
• Yun PY
• Um IW
• Lee HJ
• Yi YJ
• Bae JH
• Lee J

• KMID: 2284727
• DOI: http://doi.org/10.4047/jap.2014.6.6.521

Abstract

This case series evaluated the clinical efficacy of autogenous tooth bone graft material (AutoBT) in alveolar ridge preservation of an extraction socket. Thirteen patients who received extraction socket graft using AutoBT followed by delayed implant placements from Nov. 2008 to Aug. 2010 were evaluated. A total of fifteen implants were placed. The primary and secondary stability of the placed implants were an average of 58 ISQ and 77.9 ISQ, respectively. The average amount of crestal bone loss around the implant was 0.05 mm during an average of 22.5 months (from 12 to 34 months) of functional loading. Newly formed tissues were evident from the 3-month specimen. Within the limitations of this case, autogenous tooth bone graft material can be a favorable bone substitute for extraction socket graft due to its good bone remodeling and osteoconductivity.

Keyword

Transplantation; Autologous; Extraction socket; Dental implants; Bone substitutes

MeSH Terms

Alveolar Process*
Bone Remodeling
Bone Substitutes
Dental Implants
Humans
Prospective Studies*
Tooth*
Transplantation
Transplants*
Bone Substitutes
Dental Implants

Figure

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  Fig. 1 A panoramic radiograph of 45 years old male patient. The right mandibular second molar was assigned to be extracted. The extracted tooth was fabricated into autogenous tooth block and powder were made. Due to insufficient bone level near the inferior alveolar canal, delayed implant placement was planned after AutoBT grafting.

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  Fig. 2 AutoBT block was transplanted at the extraction socket 4 weeks after extraction.

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  Fig. 3 AutoBT powder was grafted around the block to fill the bony defect. The grafted site was covered with a resorbable collagen membrane. The primary closure was achieved.

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  Fig. 4 A periapical radiograph immediately after AutoBT socket grafting.

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  Fig. 5 A flap was raised again for an implant placement 5 months after AutoBT socket grafting.

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  Fig. 6 An implant was placed.

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  Fig. 7 The second stage surgery was achieved 5 months after the implant placement.

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  Fig. 8 A follow-up periapical radiograph 14 months after the final prostheses.

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  Fig. 9 Histology of 3-month bone specimen. AutoBT particles were completely mixed with newly formed bone. Loose fibrous tissues rich in angiogenesis were observed as well (H-E stain, ×100). 1. Existence of dentin tubules in AutoBT particles; 2. Newly formed bone; 3. Loose fibrous tissue; 4. AutoBT particle.

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  Fig. 10 Histology of 4-month bone specimen. It showed that the area where AutoBT had been resorbed was filled with newly formed osteoid (H-E stain, ×200).1. AutoBT particle; 2. Fibrous connective tissue; 3. Resorbed area filled with newly formed osteoid.

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