title: Interface between hydroxyapatite and mandibular human bone tissue.
abstract: Samples from intraosseous dental implants, removed from patients for mechanical failures, were examined to analyse the interaction between hydroxyapatite as plasma sprayed coating on titanium supports and human bone. The implantation time varied up to 8 years. No failures had arisen from problems at the interface between the hydroxyapatite coating and bone. The number of samples examined and the implantation times give good statistical conclusions. Histological and microchemical studies showed the good performance and compatibility of this sprayed hydroxyapatite. We present evidence from the best samples which show close bonding with the surrounding bone tissue. New bone is seen all around the coated implant. The composition of the calcium phosphate deposited on the hydroxyapatite and cellular approach were determined, and demonstrate the efficiency of the interaction between this plasma sprayed hydroxyapatite and the bone.
authors.affiliation: Istituto di Ricerche Tecnologiche per la Ceramica del C.N.R.-Faenza, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Ravaglioli
authors.forename: A
authors.initials: A
authors.lastname: Krajewski
authors.forename: V
authors.initials: V
authors.lastname: Biasini
authors.forename: R
authors.initials: R
authors.lastname: Martinetti
authors.forename: C
authors.initials: C
authors.lastname: Mangano
authors.forename: G
authors.initials: G
authors.lastname: Venini
mesh_terms: D000268:Adhesiveness; D001672:Biocompatible Materials; D015921:Dental Implants; D017886:Durapatite; D006801:Humans; D006882:Hydroxyapatites / Q000378:metabolism*; D008334:Mandible / Q000033:anatomy & histology / Q000601:surgery*; D008422:Materials Testing; D008854:Microscopy, Electron; D011475:Prosthesis Failure
chemical_list: D001672:Biocompatible Materials; D015921:Dental Implants; D006882:Hydroxyapatites; D017886:Durapatite