Classification according bone exposure after flap / thickness

Full thickness mucoperiosteal flap
 Includes surface mucosa (consisting of epithelium, basement membrane, and
connective tissue lamina propria) and the contiguous periosteum of the underlying alveolar bone.
 Mucoperiosteal flap
 Bone exposure required – osseous surgery, heals by primary intention.
Also used in apically repositioned flaps,
 DIASADVANTAGE OF FULL THICKNESS FLAP
o Interdental papilla integrity can be compromised.

 ADVANTAGES OF FULL THICKNESS FLAP
o Primary intention healing
 Incisions :-

o INTERNAL BEVEL INCISION
 First incision
 To remove pocket lining

o CREVICULAR INCISION
 To use No:12 blade
 Only used in perio

o INTERDENTAL INCISION

Partial thickness flap
 Includes only the mucosa,
 Mucosal flap
 Used for mucogingival surgeries, bone exposure is not required here.