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

BL: bone level, BoP: bleeding on probing, CAL: clinical attachment loss, GI: gingival index, GR: gingival recession, NS: Not specified, PI: plaque index, PPD : periodontal pocket depth.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.