Healing‐in of root analogue titanium implants placed in extraction sockets. An experimental study in the beagle dog.

Abstract

The aim of these animal experiments was to characterize and evaluate the healing-in of root analogue titanium implants fitting with high precision to the alveolar wall. Four beagle dogs were used in the study. The roots of the 3rd and 4th mandibular premolars in both quadrants of 3 dogs and in 1 quadrant of 1 dog (dog 4) were extracted after hemisection. Each root was machine-copied to 1 titanium analogue. In dog 4, however, 2 titanium analogues were fabricated from each of the 4 extracted roots. This enabled insertion of analogues also into the contralateral sockets obtained by extraction of the corresponding roots immediately before implant installation, which was undertaken 2 weeks after the first extractions. Thus, in all, 32 analogues were implanted in their respective (or contralateral) sockets following ridge incision and elevation of mucoperiosteal flaps. The analogues were carefully covered by the repositioned flaps. In dog 4, 2 analogues from the immediate sockets and 2 from the 2-week sockets were surgically exposed and supplied with titanium crowns after a healing period of 2 months. The healing after implantation was evaluated by clinical, radiographic and histological measures after 2, 12 or 36 months. Two analogues (6%) were lost due to early (during the 1st week) exposure to the oral cavity. Another 2 analogues (6%) were, although not exposed, encapsulated by soft tissue and were easily removed with a surgical forceps. Twenty-eight analogues (88%) were healed-in by contact between bone and implant (osseointegration).(ABSTRACT TRUNCATED AT 250 WORDS)

A novel root analogue dental implant using CT scan and CAD/CAM: selective laser melting technology

“…The polymethacrylate tooth-analogue was encapsulated by soft tissue rather than osseointegrated 1 . Animal studies with root-identical titanium implants yielded extremely favourable results with clear evidence of osseointegration 4 . In several instances implant insertion led to fractures of the thin buccal wall of the alveolar bone 3,4 .…”

“…Perfect implant fit could lead to excellent primary stability, however, it might be responsible for the intermediate term failure, because of the subsequent uniform pressure-induced resorption concerning the entire alveolar surface 4,8,9 simultaneously affecting the thin buccal layer, which is prone to fracture and pressure-induced resorption 4,8,9 .…”

Ki̇şi̇ye Özgü Dental İmplantlar: Derleme

“…Ancak çekilen diĢle aynı morfolojiye sahip kiĢiye özgü bir implantın çekim soketine yerleĢtirilmesi ile implant ve soket arasındaki Ģekil uyumsuzluğu ortadan kaldırılabilir dolayısıyla kemik grefti, membran ve kemik frezlerinin kullanılmasına da gerek kalmayacaktır ve bu sayede cerrahi prosedür de kolaylaĢabilir. [6][7][8][9][10][11][12][13] Bazı rezidüel kretler ise oldukça incedir ve standart çapta kök Ģekilli implantlar yerleĢtirildiğinde, implant çevresinde yaklaĢık 1-2 mm'lik çevresel kemik kalmamaktadır.…”

Morphometric analysis of the anterior region of the maxillary bone for immediate implant placement using micro‐CT

“…The ideal implant placement would be in contact with the socket without putting undue pressure on the socket walls, with the exception of where there is a very thick alveolar plate that leaves no gap between the head or neck of the implant and surrounding socket walls (Kohal et al, 1997). Some studies have shown that close adaptation of the implant to the socket wall promotes greater osseos integration (Lundgren et al, 1992;Wilson et al, 1998).…”