ABSTRACT
Objective@# The aim was to compare and document the aesthetic influences on peri-implant soft tissues between the immediate and early implant placement in the aesthetic area. @*Methods @#22 patients with single anterior teeth missing were included and divided into 2 group. Group A (12cases): Following the extraction of teeth, 12 Zimmer implants were immediately placed into sockets. Group B (10 cases): 4~8 weeks after the extraction, 10 Zimmer implants were early placed into the healing sockets. Zirconia crowns were applied on the implants 6 months later after implantation. The peri-implant soft tissues in both group were examined and evaluated by pink esthetic score (PES) 6~12 months later. Analysis of the data was performed by software SPSS 13.0. @*Results @#The mean PES was 9.27 (clinical acceptance) for all of the implants. No significant were found for any of the parameters between the treatment modalities regardness of total PES or single PES. However there were significant differences in the following aspects: the correlation between periodontal disease and papilla, the correlation between gingival biotype and mesial papilla, the correlation between gingival biotype and alveolar process deficiency, the correlation between Implant location and midfacial soft tissue level. @*Conclusion@#There are no significant differences between immediate placement and early placement on the aesthetic outcome of peri-implant soft tissues. The aesthetic outcome are related to patients oral health condition and clinicians skills.
ABSTRACT
Objective@#To evaluate the accuracy of digital surgical guide in tilted implant in the maxillary posterior region.@*Methods @# Jaw data from 14 patients were scanned using cone beam computed tomography (CBCT), and digital models were acquired by scanning maxillary plaster models. Implant software was employed to process jaw data and digital models in order to design the surgical template. Then the stereolithographic (SLA) surgical template was created to guide the surgery. After that CBCT data was collected again and compared with the data collected before. Deviations between the actual implant position and the planned implant position were analyzed. @*Results@#Central deviation at the hex and apex between the actual implant and the planned implant was almost constant with a mean of (0.625 ± 0.183) mm and (0.820 ± 0.208) mm. Mean value of horizontal deviation at the hex was (0.314 ± 0.070) mm, horizontal deviation at the apex was (0.509 ± 0.139) mm, vertical deviation at the hex was (0.538 ± 0.178) mm, vertical deviation at the apex was (0.638 ± 0.178) mm. @*Conclusion@#Angled implantation in the maxillary posterior region can reduce risks and trauma as well as the difficulties and duration of surgery. However, our data suggested that significant deviations existed in the actual implant position and the planned implant position.