Immediate implants are positioned in the course of surgical extraction of the tooth to be replaced . the percentage success of such procedures varies among authors from 92.7-98.0% the main indication of immediate implantation is the replacement of teeth with pathologies not amenable to treatment . Its advantages with respect to delayed implantation includes reduced post- extration alveolar bone resorption , a shortening of rehabilitation treatment time , and avoidance of a second surgical intervention . The inconveniences in turn comprise a general requirement for membrane – guided bone regeneration techniques , with the associated risk of exposure and infection , and the need for mucogingival grafts to seal the socket space and / or cover the mem-branes . The surgical requirements for immediate implantation include extraction with the least trauma possible , preservation of the extraction socket walls and thorough alveolar curettage to eliminate all pathological material .
Primary stability is an essential requirement , and is achieved with an implant exceeding the alveolar apex by 3-5 mm , or by placing an implant of greater diameter than the remenant alveolus . Esthetic emergence in the anterior zone is achieved by 1-3 mm subcrest implantation . Regarding guided regeneration of alveolar bone , the literature lacks consensus on the use of membranes and type of filler material required . While primary wound closure is desirable , some authors do not consider it to be of great relevance .
The dental implant and provisional restoration provided the patient with immediate esthetics , function , comfort and most importantly preservation of tissues .