الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The main concern in the early years of dental implant was the osseointegration but the prospects have changed and there has been an increasing appreciation towards esthetics and success of the restoration. Preservation or creation of a soft tissue scaffold needed to create illusion of a natural tooth is often a challenging and difficult to achieve.
The primary objective of present study was to clinically measure and compare the width of peri-implant keratinized mucosa following the use of ready-made plastic stent with apically repositioned flap versus conventional apically repositioned flap during single stage implant placement protocol. The secondary objective was to radiographically evaluate the bone width and height using cone beam computed tomography The current study was performed on a total of twenty patients10 patients were included in group I (ready-made plastic stent) and 10 patients in group II (control).
After implant placement and securing of the apically repositioned flap by readymade plastic stent and sutures in group 1 and group 2 respectively, post-operative evaluation at 3 months and 6 months’ intervals of all clinical parameters in addition to the pink esthetic score and CBCT was done. The results of the present study revealed that the values of PD, PI, BI were not statistically significant different between the stent group and control group at baseline, 3 months and 6 months follow up period. Furthermore, no significant change was evident between each time interval within each group carried out. all data were statistically analyzed.
This study also demonstrated a statistically significant gain in width of KM between baseline and each of 3 months and 6 months’ intervals in the stent group. The mean width of KM was increased from 1.60 mm at baseline to the value of 4.85mm in 3 months’ interval and 4.70 mm at 6 months’ interval.
Also in the control group there was a statistically significant gain in width of KM between baseline and each of 3 months and 6 months’ intervals. the mean width of KM was increased from 1.80 mm at baseline to the value of 4.85 mm in 3 months’ interval and 4.70 mm at 6 months’ interval.
No statistically significant difference was found between the stent group and control group in 6 months’ interval, where both groups showed the same mean value (4.70±0.35) and (4.70±0.63) respectively. The percent of change of the width of KM was found to be higher in the stent group than the control group with no statistical significance.
The assessment of esthetic outcome using PES gave an average score of 7.9 after 6 months indicating good esthetics, and this value was statistically higher in both groups than each of the 3 months and baseline values.
Cone beam radiographic examinations for both groups revealed that there was no statistically significant difference between Baseline, 3 months and 6 months’ interval in bone width. In the stent group the highest mean width was found in Baseline (7.65±0.71) followed by 3months (7.45±0.65), (7.23±0.69) in the 6 months’ interval, same results were found in the control group as The highest mean width was found in Baseline (7.26±0.25) followed by 3months (7.03±0.71), (6.98±0.73) in the 6 months’ interval.
At the 6 months follow up period, the mean bone height was higher in the control group than the stent group with no significant difference between them. This indicates that the crestal bone loss was slightly higher in the in the stent group (0.35) than the control group (0.25).
Despite the limitations and the clinical challenges of the present study it can be conclude that the use of a readymade plastic stent in combined full partial thickness apically repositioned flap was shown to be effective in increasing the width of KM compared to the conventional technique.