Argimiro Hernández-Suarez1, Luis-Guillermo Oliveros-López2, María-Ángeles Serrera-Figallo3, Celia Vázquez-Pachón4, Daniel Torres-Lagares5, José-Luis Gutiérrez-Pérez6. 1. DDS, OMS, MSc. PhD student at Dental School, University of Sevilla (Seville, Spain). Director of National Center of Oro-Maxillofacial Surgery and Implants CIBUMAXI, Caracas, Venezuela. 2. DDS, MOS. PhD student at Dental School. University of Sevilla, Seville, Spain. 3. DDS, MOM, MOS, PhD. Assistant Professor of Oral Surgery at Dental School. University of Sevilla, Seville, Spain. 4. DDS, MOS and PhD student at Dental School. University of Sevilla, Seville, Spain. 5. DDS, MOS, PhD. Full Professor of Oral Surgery at Dental School. University of Sevilla, Seville, Spain. 6. DMD, OMS, PhD. Tenure Professor of Oral Surgery at Dental School. University of Sevilla, Seville, Spain. Head of Oral and Maxillofacial Surgery Service at Virgen del Rocio University Hospital, Seville, Spain.
Abstract
BACKGROUND: Maxillary atrophy may be related to mechanical, inflammatory or systemic factors, being a consequence of a reduction in the amount and quality of available bone. Several surgical techniques have been developed for the restoration of bone volume needed for placing dental implants; guided bone regeneration or three-dimensional reconstructions with autologous bone, inter alia, are techniques described in the literature which demonstrate this, all of which preceded by a proper prosthetic surgical assessment. Even when the majority of authors recommend the use of these techniques prior to placing implants, it has been shown that implants with a smaller diameter and length may be placed in severely atrophied jaws without the need for performing any surgery, offering excellent results. MATERIAL AND METHODS: Twenty-four (24) implants were placed in six patients with severe mandibular atrophy. The implants were placed in the anterior sector and on an internal oblique line. Patients were rehabilitated with a total implant-supported prosthesis, with monitoring over a 10-year period. RESULTS: After a 12-month monitoring period, all the patients presented successful rehabilitation. Marginal bone loss in general (n=24 implants) was +0.11 mm ± 0.53. In the implants in zones 1 and 4 (posterior) it was +0.06 mm ± 0.48 and in implants in zones 2 and 3 (anterior), +0.14 mm ± 0.57. CONCLUSIONS: Implants can be placed in the anterior zone and on an internal oblique line in patients with severe mandibular atrophy, using a diameter and length adapted to bone availability, for later prosthetic rehabilitation, offering satisfactory results since phonetic and masticatory function can be restored, as well as facial and buccal aesthetics, in a single surgical operation, with minimum morbidity. Key words:Severe atrophy, implants, bone grafts, ridge atrophy, internal oblique line. Copyright:
BACKGROUND: Maxillary atrophy may be related to mechanical, inflammatory or systemic factors, being a consequence of a reduction in the amount and quality of available bone. Several surgical techniques have been developed for the restoration of bone volume needed for placing dental implants; guided bone regeneration or three-dimensional reconstructions with autologous bone, inter alia, are techniques described in the literature which demonstrate this, all of which preceded by a proper prosthetic surgical assessment. Even when the majority of authors recommend the use of these techniques prior to placing implants, it has been shown that implants with a smaller diameter and length may be placed in severely atrophied jaws without the need for performing any surgery, offering excellent results. MATERIAL AND METHODS: Twenty-four (24) implants were placed in six patients with severe mandibular atrophy. The implants were placed in the anterior sector and on an internal oblique line. Patients were rehabilitated with a total implant-supported prosthesis, with monitoring over a 10-year period. RESULTS: After a 12-month monitoring period, all the patients presented successful rehabilitation. Marginal bone loss in general (n=24 implants) was +0.11 mm ± 0.53. In the implants in zones 1 and 4 (posterior) it was +0.06 mm ± 0.48 and in implants in zones 2 and 3 (anterior), +0.14 mm ± 0.57. CONCLUSIONS: Implants can be placed in the anterior zone and on an internal oblique line in patients with severe mandibular atrophy, using a diameter and length adapted to bone availability, for later prosthetic rehabilitation, offering satisfactory results since phonetic and masticatory function can be restored, as well as facial and buccal aesthetics, in a single surgical operation, with minimum morbidity. Key words:Severe atrophy, implants, bone grafts, ridge atrophy, internal oblique line. Copyright:
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