ABSTRACT
Resident standardization training of dentists is a very important program for the dental students , during which they are trained to be capable of analyzing cases logically and carrying out the treatment suitably. The students who study in this period always have a certain level of basic knowledge and with the full passion for clinical practice, so it's important for them to develop the correct clinical thinking method and form a life-long learning habit. However, the traditional teaching models can't catch up with today's more and more divergent and complicated demands of teaching and learning. The new ori-ented teaching models of PBL and CBL may offer us new ways to carry out the resident standardization training more efficiently, simulate the student's passion of learning and gain wider experience in short time, for their student-centered and clinical cases-guided characteristics.
ABSTRACT
Objective:To establish peri-implantitis model in beagle dog. Methods:Mandibular first, second and third premolar and first morlar of 5 beagle dogs were extracted. 3 months after tooth extraction,6 branemark pure titanium implants were bilaterally inserted into the posterior mandible in each dog. After healing-abutment connection, cotton ligatures were placed around the healing-abutments and then plaque was accumulated. Clinical and radiographic recording were repeated 1,3 and 5 months respectively after baseline data had been obtained. Surgical recording and pathological changes of peri-implant bone morphology were studied. Results:1,3 and 5 months after the formation of ligature-induced peri-implant inflammation, plaque index,pocket depth and gingival index were singnificantly increased(P