Instrument for extraction socket measurement in immediate implant installation

Abstract

The aim of the present study was to create an instrument and a computer program for measurement of extraction sockets and for planning of the immediate replacement of teeth using screw-shaped dental implants. Ten titanium screw-shaped Osteofix Dental Implant System implants (Osteofix, Oulu, Finland) were immediately installed after extraction in nine patients, four women and five men (age 17-62 years). The measurements of fresh extraction sockets were taken at six points (mesio-buccal, buccal, disto-buccal, disto-lingual, lingual and mesio-lingual) using an instrument created by the author. The area of no contact between bone and dental implant was 11-40% (mean 31%, SD 9%), calculated by computer program. If less than 30% of the implant surface area would be in contact with the bone, immediate replacement was abandoned because sufficient primary stability could not be achieved. Guided bone regeneration was promoted by covering the implant and bone defect with deproteinized bovine bone mineral (Bio-Oss, Geistlich AG, Wolhusen, Switzerland) and bioresorbable collagen membrane (Bio-Gide, Geistlich AG), fixed in place with resorbable pins (Resor Pin, Geistlich AG). After 6 months a considerable, statistically significant (P< 0.05) defect reduction of 90% (SD 7%) was noted. It was concluded that an instrument and a computer program created for extraction socket measurement are useful in some borderline cases when there is lack of bone and the success of one-stage implantation is doubtful.

Morphometric analysis of maxillary alveolar regions for immediate implantation

“…In the process of the fixture installation, it is also important to get enough primary stability 14. Because implant success rate increases as the primary stability increases, thereby showing better prognosis 15.…”

Soft and hard tissue assessment of immediate implant placement: a case series

“…For this reason, within the last decades, the 'gold standard' implant treatment protocol has been challenged by experiments, which aimed at shortening the treatment period and by reducing the number of surgical procedures. The literature has demonstrated that it is no longer needed to wait for complete healing of the extraction socket before implant placement (Lazarra 1989;Knox et al 1991;Lundgren et al 1992 Wilson et al 1998;Rosenquist & Ahmed 2000;Hämmerle & Lang 2001;Nemcovsky et al 2002;Juodzbalys 2003;Bianchi & Sanfilippo 2004). With this surgical approach, it allows a better final rehabilitation because it facilitates morphological ridge contour preservation as well as accurate prosthetic implant installationmaintaining the natural tooth angle (Werbitt & Goldberg 1992).…”

The success rate of immediate implant placement of mandibular molars: a clinical and radiographic retrospective evaluation between 2 and 8 years

“…However, evidence has shown no need for complete healing of the socket and that both tooth extraction and implant placement can be successfully performed in a single surgical procedure (Rosenquist & Ahmed ; Covani et al. ; Juodzbalys ; Schropp et al. ).…”

“…Branemark's (1985) original protocol recommended a 6-month waiting period between tooth extraction and implant placement (Covani et al 2003) as a prerequisite for osseointegration of the implant (Rosenquist & Ahmed 2000). However, evidence has shown no need for complete healing of the socket and that both tooth extraction and implant placement can be successfully performed in a single surgical procedure (Rosenquist & Ahmed 2000;Covani et al 2003;Juodzbalys 2003;Schropp et al 2005). Although the immediate implantation technique (Schulte et al 1978) has been studied with animals (Botticelli et al 2004a; and humans (Paolantonio et al 2001;Covani et al 2003), few studies have evaluated it in molar regions.…”