Bone sequestration after dental implant surgery


  • Claudia Carrara Cotomacio Universidade Paulista
  • Wladimir Gushiken de Campos Universidade de São Paulo. Faculdade de Odontologia
  • Celso Augusto Lemos Universidade de São Paulo
  • Fabio Abreu Alves Hospital A.C. Camargo Câncer Center



Case-report/series, Computerized Tomography, Oral and maxillofacial, Oral implant, Osteonecrosis


Background. Dental implants are used to rehabilitate missing teeth, and despite high success rates, failures are inevitable. Ostensibly avoidable human errors in planning or technique can contribute to implant failure. Case presentation. Herein, we report a case of an unsuccessful dental implant surgery due to an inadequate surgical technique and bone exposure in a 54-year-old healthy woman. Conclusions. This report underscores the relevance of reporting the consequences of these human factors, such as loss of the implant, alveolar bone segment, and three teeth.


Download data is not yet available.

Author Biographies

Claudia Carrara Cotomacio, Universidade Paulista

School of Dentistry, Paulista University (Unip), São Paulo, SP, Brazil.

Wladimir Gushiken de Campos, Universidade de São Paulo. Faculdade de Odontologia

Department of Oral Medicine, School of Dentistry, University of São Paulo (USP), São Paulo,
SP, Brazil.

Celso Augusto Lemos, Universidade de São Paulo

Department of Oral Medicine, School of Dentistry, University of São Paulo (USP), São Paulo, SP, Brazil.

Fabio Abreu Alves, Hospital A.C. Camargo Câncer Center

Stomatology Department, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.


Gomes GH, Misawa MYO, Fernandes C, Pannuti CM, Saraiva L, Huynh-Ba G, et al. A systematic review and meta-analysis of the survival rate of implants placed in previously failed sites. Braz Oral Res. 2018;32:1-13. doi:

Schlund M, Raoul G, Ferri J, Nicot R. Mandibular osteomyelitis following implant placement. J Oral Maxillofac Surg. 2017;75(12):2560.e1-2560.e7. doi:

Chen H, Liu N, Xu X, Qu X, Lu E. Smoking, radiotherapy, diabetes and osteoporosis as risk factors for dental implant failure: a meta-analysis. PLoS One. 2013;8(8):e71955. doi:

Duyck J, Naert I. Failure of oral implants: aetiology, symptoms and influencing factors. Clin Oral Investig. 1998;2(3):102-14. doi:

Greenberg AM. Digital technologies for dental implant treatment planning and guided surgery. Oral Maxillofac Surg Clin North Am. 2015;27(2):319-40. doi:

Alfadda SA. Current evidence on dental implants outcomes in smokers and nonsmokers: a systematic review and meta-analysis. J Oral Implantol. 2018;44(5):390-9. doi:

Veitz-Keenan A. Marginal bone loss and dental implant failure may be increased in smokers. Evid Based Dent. 2016;17(1):6-7. doi:

dos Santos PL, Gaujac C, Shinohara EH, Filho OM, Garcia-Junior IR. Incomplete mandibular fracture after lateralization of the inferior alveolar nerve for implant placement. J Craniofac Surg. 2013;24(3):e222-4. doi:

Lin G, Ye S, Liu F, He F. A retrospective study of 30,959 implants: risk factors associated with early and late implant loss. J Clin Periodontol. 2018;45(6):733-43. doi:

Kern JS, Kern T, Wolfart S, Heussen N. A systematic review and meta-analysis of removable and fixed implant-supported prostheses in edentulous jaws: post-loading implant loss. Clin Oral Implants Res. 2016;27(2):174-95. doi:






Case report or technical report