Aesthetic Periodontal Therapy – Root Coverage
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groups was statistically insignificant (
P
>0.05). Mean keratinized tissue
increased significantly
from 1.4 ± 1.1 mm presurgery to 4.5 ± 1.1 mm postsurgery for the envelope technique group
while a minor increase in KT was observed in the coronally positioned flap combined with
connective tissue graft group (2 ± 1.5 mm presurgery versus 2.7 ± 1.6 mm postsurgery)
(Cordioli et al., 2001). For an mean initial recession depth of 2.9 mm (2.5-3.4), an mean %
root coverage of 83% (80-87) has been reported (Bouchard et al., 2001). Among four studies
reviewed(Allen, 1994; Jepsen et al., 1998; Müller et al., 1998; Raetzke, 1985) , the % teeth
with complete root coverage was 53 (42–62) (Bouchard et al., 2001).
The key to the envelope flap is that it preserves the lateral and apical blood supply of the
flap by eliminating vertical release incisions (Sedon et al., 2005). This technique minimizes
surgical trauma to the recipient bed and provides good healing and excellent esthetic results.
Among various connective tissue graft procedures, it is the last conducive to complete
coverage of the defect by the overlying tissue, because of the manner in which the recipient
bed is prepared (Yotnuengnit et al., 2004). In general, this surgical method provided excellent
root coverage and an increased amount of keratinized gingiva.Vergara and Caffesse (2004)
reported that thecomplete root coverage mean was 85%, 65%, and 16% for recession Class I,
II, and IV, respectively.
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