title: Treatment of atrophic maxilla with zygomatic implants in 29 consecutives patients.
abstract: Atrophic maxilla is a common condition in older population; some treatments are proposed with bone reconstruction or zygomatic implant. Long-term follow up show the efficiencies of zygomatic implant but limited data are associated to consecutive patient. The aim of this study was to evaluate retrospectively the zygomatic implants performed consecutively in 29 patients. Data from clinical records of 29 patients treated with zygomatic implants were analyzed; were include patient with at least 10 month of prosthetic function. Four surgeons realized all surgeries using local anesthesia with a slot technique on local anesthesia; the variables analyzed were implant survival, complications, prosthetic load and satisfaction of patient; data collection was analyzed by descriptive statistic and chi-square test with p<0.05 for significance statistical. 67 zygomatic implants and 84 conventional implants were installed in patients between 35 and 69 year old being 18 (62%) female and 11 (38%) male.The main indication was the case of severe alveolar resorption in 21 cases (72.41%), followed by failures in maxillary reconstruction with bone graft in 4 (13.79%). The implant success was 79.1% and the immediate or delayed load was not associated to statistical difference (p=0.104). The main complication was the loss of osseointegration and mucositis. Analogue Visual Scale (AVS) for satisfaction show acceptable esthetic and function. Finally we conclude that zygomatic implant present adequate survivor and a good response of patient; important complication can be present in a learn curve for this surgery.
authors.affiliation: Division of Oral and Maxillofacial Surgery, Universidad de San Martin de Porres Peru.
authors.forename: Jaime G
authors.initials: JG
authors.lastname: Rodríguez-Chessa
authors.affiliation: Division of Oral and Maxillofacial Surgery, Universidad de La Frontera Chile ; Center for Biomedical Research, Universidad Autónoma de Chile Chile.
authors.forename: Sergio
authors.initials: S
authors.lastname: Olate
authors.affiliation: Division of Oral and Maxillofacial Surgery, Federal University of Juiz de Fora Brazil.
authors.forename: Henrique Duque
authors.initials: HD
authors.lastname: Netto
authors.affiliation: Division of Periodontics, University of Guarulhos Brazil.
authors.forename: Jamil
authors.initials: J
authors.lastname: Shibli
authors.affiliation: Division of Oral and Maxillofacial Surgery, State University of Campinas Brazil.
authors.forename: Márcio
authors.initials: M
authors.lastname: de Moraes
authors.affiliation: Division of Oral and Maxillofacial Surgery, State University of Campinas Brazil.
authors.forename: Renato
authors.initials: R
authors.lastname: Mazzonetto
keywords: Zygomatic implants; atrophic maxilla; surgical technique