الفهرس 
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Abstract
Aim: to compare the esthetic outcome of two surgical techniques used in single immediate
implant placement (computer guided vs free hand) in the esthetic zone in terms of pink esthetic score
(PES) and gingival recession (GR).
Setting and design: This randomized clinical trial was conducted in research clinic,
Prosthodontic department, Faculty of dentistry, Cairo university. The study was registered online at
clinicaltrial.gov with identifier registration number NCT03211819.
Methods: Twenty patients with a failing tooth in the esthetic zone were recruited for immediate
implant placement and provisionalization from the period September 2017 till September 2019. They
were randomly allocated to either computer guided (test group) or free hand (control group). Six months
after surgery the patients were restored with their definitive crowns. PES was recorded twice (after
surgery and after definitive crown), while gingival recession was recorded after the definitive crown.
Statistical analysis used: Numerical data were summarized using means and standard deviations.
For PES comparisons between 2 groups were done using the t-test and overtime in each group was done
by paired t test. P-values ≤0.05 were considered significant.
Results: No statistically significant difference was found between the mean differences of PES
between both groups and within each group overtime. Regarding gingival recession, 2 implants showed
GR in the computer guided group while none in the free hand group.
Conclusions: Within the limitations of this study (sample size and follow-up duration) it could
be concluded that using computer guided immediate implant placement in the esthetic zone has provided
promising outcomes.