[A minimally invasive extraction technique using Benex Extraction System in flapless immediate implant placement in anterior teeth].
OBJECTIVE
To evaluate the feasibility and clinical outcomes of an atraumatic extraction technique using Benex Extraction System in flapless immediate implant placement in anterior teeth.


METHODS
Twenty-five patients with single hopeless anterior maxillary teeth were enrolled in the study. The involved teeth were extracted using Benex Extraction System and implants were immediately placed in a flapless way. Healing abutments were connected immediately. After 4-6 months of healing, screw-retained implant temporary crowns were used to reshape the peri-implant gingiva. Permanent restorations were delivered 3 months later. Extraction time was recorded and the technique feasibility was evaluated using visual analogue scale (VAS). Peri-implant marginal bone resorption was measured in X- ray films after loading for 1 year later. Pink esthetic score (PES) was checked to evaluate the gingival esthetics. Questionnaire was delivered and collected to assess patients' satisfaction on surgical experience and esthetic outcomes. SPSS 13.0 software package was used for statistical analysis.


RESULTS
Twenty-five implants osseointegrated successfully. The marginal bone resorption was (0.21±0.23) mm and PES was 8.8±1.19 after loading for 1 year. The mean extraction time was 6.87 minutes and the VAS was 3.32. All patients were satisfied with the final esthetic outcomes and felt comfort during surgery.


CONCLUSIONS
According to the limited data in the study, Benex extraction System is a convenient, atraumatic and predictable technique during flapless immediate implant placement in anterior teeth.
Department of Implantology, School and Hospital of Stomatology, Peking University. Beijing 100081, China. E-mail:shuxin.ren@hotmail.com.
Shu-Xin
SX
Ren
Xiu-Lian
XL
Hu
Jian-Hui
JH
Li
Xi
X
Jiang
Ye
Y
Lin
D000328:Adult; D003442:Crowns; D003758:Dental Implantation, Endosseous / Q000379:methods*; D019250:Dental Implants, Single-Tooth; D004954:Esthetics; D004955:Esthetics, Dental; D005260:Female; D005881:Gingiva; D006801:Humans; D057893:Immediate Dental Implant Loading; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D014081:Tooth Extraction / Q000379:methods*; D020390:Tooth Socket; D016896:Treatment Outcome