Complication rates for various retention types in anterior implant-supported prostheses: A retrospective clinical study.

Statement Of Problem: Implant-supported prostheses have typically been retained by cement or screws, each of which has advantages and disadvantages. Two new types of prosthesis with complementary advantages and disadvantages have been proposed: the screw- and cement-retained prosthesis, which combines cement and screw retention, and the antiloosening inner-post screw (ALIPS) type, which uses lateral screws. Both esthetic and functional factors should be considered for anterior prostheses; however, clinical studies of the complication rates of these designs are lacking.

The prosthetic abutment height can affect marginal bone loss around dental implants.

Background: Marginal bone loss (MBL) is considered an important determinant of implant success, and establishing the peri-implant biological width has been regarded to influence MBL around implants. However, few studies have attempted to show the relationship between the crown/abutment gap and MBL.

Purpose: To evaluate the effect of the prosthetic abutment height on MBL of dental implants.