Open Access
Table II
Details of periodontal parameters assessed and main results of the included studies.
| First author | Periodontal parameters studied (n = Number of sites assessed) | Conditions and Flap design | Results |
|---|---|---|---|
| Ahmad M, 2021 | PPD (n = 2) CAL (n = 2) BL (n = 2) |
Triangular flap Envelope flap |
Significant increase in distal and buccal PPD in both groups from baseline to six months, with significant higher values in envelop group Significant increase in distal and buccal CAL in both groups from baseline to six months Significant increase in distal BL in both groups from baseline to 3 months and 3 months to 6 months and significantly higher in EF patients compared to SF patients at 3 months |
| Alqahtani NA., 2017 | PPD (n = 1) | Triangular flap Envelope flap |
Significant increase of PPD in both groups from baseline to 3 months No significant difference between the two flaps |
| Aniko-Włodarczyk M, 2021 | PPD (n = 6) GI (n = 4) |
Triangular flap Non-operated opposite side |
Significant enhancement of PPD in the operated side after eight weeks GI significantly increased in the operated side seven days after the surgery. This difference was no longer significant after eight weeks. |
| Baldini N, 2015 | PPD, CAL, BoP, PI (n = 2) |
Envelope flap Trapezoidal flap |
Significant reduction in PPD and CAL after surgery in both groups No significant difference between the two flap designs after 6 months follow-up BoP and PI:NS |
| Baqain ZH, 2012 | PPD, BoP, PI (n = 1) |
Triangular flap Envelope flap |
Increase in distal PPD in the early postoperative period in both groups; significantly greater with envelope flaps Increase in BoP and PI in both flaps; greater in the triangular group for PI but the difference did not reach statistical significance |
| Briguglio F, 2011 | PPD, CAL, BoP, PI (n = 6) |
Triangular flap Envelope flap modified by Thibauld and Parant Envelope flap modified by Laskin |
Significant decrease in PPD and CAL in all three groups; significantly greater decrease for the triangular flap BoP and PI:NS |
| Desai A, 2014 | PPD (n = 1) |
Triangular flap Envelope flap |
Significantly more distal pockets after 15 days in the triangular flap group |
| Dicus-Brookes C, 2013 | PPD (n = 6) |
Third molar removal (flap: NS) |
The proportion of patients with at least a PPD > 4 mm on any M2 at enrollment decreased significantly after surgery |
| Fakour SR, 2017 | PPD (n = 1) |
Triangular flap Envelope flap |
No significant difference between the two flaps from preoperative values to 2 months follow-up |
| Faria AI, 2012 | PPD, CAL, BoP, GI (n = 5) |
Envelope flap | Significant decrease of PPD and CAL after surgery No significant difference between PPD at 3 months, 6 months and 12 months The highest PPD and CAL values were always found at the centro-distal site of the second molar BoP and GI:NS |
| Kim H-R, 2011 | PPD (n = 4) |
Envelope flap Flapless |
PPD was significantly higher in the envelope flap group 1 and 3 months after the surgery The difference in the PPD between the 2 groups were significant at 1 and 3 months after surgery |
| Korkmaz YT, 2015 | PPD, GI, PI, GR (n = 6) |
Laterally rotated triangular flap Envelope flap |
Significant decrease in PPD in both groups, but the decrease was significantly greater in the triangular group than the envelope group GI and PI decreased significantly in both groups but the decrease was significantly greater in the triangular group Significant increase in GR at the disto-vestibular site in both groups with significant greater values in the envelop group |
| Laurito D, 2016 | PPD (n = 7) BoP (n = 7) PI (n = 4) |
Triangular flap Transposed flap |
No significant difference between the two groups preoperatively and 60 days after surgery for all the parameters |
| Melo Stella PE, 2017 | PPD, BoP, PI (n = NS) |
Envelope flap | Significant decrease in PPD from baseline to 180 days follow-up Significant increase in BoP from baseline to 180 days follow-up Significant increase in PI was recorded after extraction |
| Montero J, 2011 | PPD (n = 1) GI (n = 4) PI (n = 4) |
Triangular flap Envelope flap |
Significant decrease in PPD after surgery in both groups but significantly greater decrease in patients with a deep periodontal pocket preoperatively Significant decrease in GI and PI after surgery in both groups |
| Mudjono H, 2020 | CAL (n = 1) | Triangular flap Reversed triangular flap |
No significant difference between both flaps Significant decrease of CAL between day 14 and day 30 |
| Ottria L, 2017 | PPD (n = NS) CAL (n = 3) GR (n = NS) PI (n = NS) |
Triangular flap Modified triangular flap Envelope flap |
No significant difference between groups that show complete recovery of the periodontium after surgery Two slight gingival recessions were observed NS for each periodontal parameters |
| Passarelli PC, 2019 | PPD, CAL, BoP, PI, GI (n = 6) |
Triangular flap | Significant improvement in CAL, PI, GI and BoP The mean values of PPD at DB and DL sites at 6 months were reduced but the difference was no statistically significant No significant difference at final time between deeply and superficially impacted molars |
| Petsos H, 2016 | PPD, CAL, PI, GI (n = 6) |
« Short-envelope » flap | Significant decrease in PPD and CAL from baseline to 6 months follow-up An average improvement for the GI, deterioration for the PI, but the differences were not statistically significant |
| Pham T, 2019 | PPD, CAL, BoP, PI, GI (n = 4) |
Third molar removal (flap: NS) | Significant decrease in PPD, GI, BoP, PI from baseline to 6 months follow-up CAL significantly increases from baseline to 1 month follox-upand then significantly decreases until final time No significant difference between the superficial and deep molar group on PPD, GI, PI, BOP CAL is significantly lower in the superficial molar group |
| Silva JL, 2011 | PPD (n = 3) | Vertical incision L-shaped incision |
No significant difference between both flaps Significant decrease from baseline to 60 days, but no significant difference between 60 and 90 days |
| Sridharan G, 2020 | PPD (n = NS) | Triangular flap Modified triangular flap |
No statistical significant difference between both flaps |
| Tabrizi R, 2013 | PPD, CAL (n = 1) |
Triangular flap | Significant increase in PPD from baseline to 26 weeks post-operative Significant decrease of CAL from baseline to 26 weeks post-operative |
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