Prosthodontics ,Dental

With the advancement in science and technology, Immediate implant placement has become a widely used and well accepted alternative to traditional treatment protocols. Post extraction implant placement in multicoated molar area is challenging. The primary stability in molar areas is achieved by engaging the interradicular bone but slipping of osteotomy drill to mesial or distal root socket during implant bed preparation is the main problem in post extraction immediate implant placement. Use of surgical guide, pre- extractive interradicular implant bed preparation and the combination of both these techniques has been used to overcome the problem related to immediate implant placement at molar sites. This paper presents an alternative approach in immediate Implant placement in multi rooted molar area that uses the anatomy and morphology of roots in guiding the osteotomy  to provide an ideal3-dimensional implant positioning.

Introduction: Impression materials are used to record the anatomical topography of oral tissues. Irreversible hydrocolloid is an impression material routinely used in dentistry. However, it retains bacteria, 2 to 3 times higher than other impression material. Spraying and immersion technique has been employed for disinfection of irreversible hydrocolloid with varying degree of success. Thus the need of impression material that has self-disinfecting capacity seems to be very important to have infection control in dentistry. Materials and Methods: This invitro study was done in two parts. Assessment of self-disinfecting capacity of irreversible hydrocolloid impression material mixed with different concentrations of chlorhexidine solution and dimensional stability of irreversible hydrocolloid impression material mixed with different concentrations of chlorhexidine solution. For assessment of self-disinfecting capacity, irreversible hydrocolloid was mixed with various concentrations of ...