|Year : 2020 | Volume
| Issue : 5 | Page : 486-490
Modified coronally advanced flap design in management of isolated gingival recession: Saddle flap technique
Selvaraj Raja Rajeswari1, Triveni M Gowda2, AB Tarun Kumar2, Potluri Leela Ravishankar1, Kapa Bhargavi Preeti2, Divya Dhingra2
1 Department of Periodontics, SRM Kattankulathur Dental College, Chennai, Tamil Nadu, India
2 Department of Periodontics, Bapuji Dental College and Hospital, Davanagere, Karnataka, India
|Date of Submission||18-Dec-2019|
|Date of Decision||18-Mar-2020|
|Date of Acceptance||29-Mar-2020|
|Date of Web Publication||01-Sep-2020|
Dr. Selvaraj Raja Rajeswari
Department of Periodontics, SRM Kattankulathur Dental College, Chennai, Tamil Nadu
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Saddle flap technique, a modified coronally advanced flap approach for isolated gingival recession management was introduced and assessed in terms of clinical efficacy and patient satisfaction. A total of 10 systemically healthy subjects with isolated gingival recession defect (Miller Class I and II) were enrolled in the study. The primary endpoint measure was patient satisfaction in terms of esthetics and percentage root coverage. The secondary outcome measures comprised clinical attachment level change, gingival thickness variation, width of keratinized tissue alteration, and postoperative healing. At 1 year postoperative, 80% of the treated sites achieved 100% root coverage. Based on clinical results, saddle flap technique could be considered as one of the possible treatment options for isolated gingival recession with good esthetic and patient satisfaction.
Keywords: Gingival recession, reconstructive surgical procedures, surgical flaps, treatment outcome
|How to cite this article:|
Rajeswari SR, Gowda TM, Tarun Kumar A B, Ravishankar PL, Preeti KB, Dhingra D. Modified coronally advanced flap design in management of isolated gingival recession: Saddle flap technique. J Indian Soc Periodontol 2020;24:486-90
|How to cite this URL:|
Rajeswari SR, Gowda TM, Tarun Kumar A B, Ravishankar PL, Preeti KB, Dhingra D. Modified coronally advanced flap design in management of isolated gingival recession: Saddle flap technique. J Indian Soc Periodontol [serial online] 2020 [cited 2020 Oct 20];24:486-90. Available from: https://www.jisponline.com/text.asp?2020/24/5/486/294104
| Introduction|| |
Dental aesthetic dissatisfaction and dentinal hypersensitivity are some of the frequent patient related concerns, especially with the management of gingival recession. Considering the treatment possibilities, numerous modalities have been proposed. With the patient's keen demands on esthetic outcomes, selection of appropriate technique plays a crucial role. Coronally advanced flap (CAF) is the treatment of choice in the presence of adequate width of keratinized gingiva (WKG), exhibiting good color blending and optimal coverage. It is based on the principle of coronal shifting of the gingiva over the previously denuded root surface, improving the clinical attributes with enhanced outcome.
A split–full-split thickness envelope flap elevation was presented as a modification of CAF in multiple GR management, with 97% coverage. Subsequently, a laterally repositioned, trapezoidal designed CAF raised using two horizontal beveled and two oblique vertical releasing incisions was also introduced to bring about complete root coverage in isolated GR defect. However, the limitations of these techniques include placement of vertical incision, which may compromise the esthetic result obtained. Although this technique was superior in its treatment outcomes, esthetics is an integral part of periodontal therapy which is becoming increasingly essential from patient point of view. Hence, the need for newer and ever-evolving surgical techniques is deemed necessary. Considering above and to avoid soft-tissue trauma to uninvolved adjacent teeth, the objective of the present study was to report a new flap design for treating isolated recession defects: saddle flap and to clinically assess its efficacy in terms of clinical variables and esthetic outcome.
| Materials and Methods|| |
Ten patients (6 males and 4 females), aged 25–40 years, were recruited from the outpatient department of periodontics of Bapuji dental college and hospital in Karnataka, India. Patient selection, surgical management, and postsurgical follow-up were done from August 2017 to September 2018. The inclusion criteria comprised isolated Miller's Class I and II recession defects (≥2 mm), with adequate WKG on adjacent teeth, no occlusal interferences, and nonsmoker. Exclusion criteria for the surgical procedure involved: tooth with caries, restoration and pulpal pathology, uncontrolled systemic conditions, compromised healing potential (diabetes), history of intake of steroid medications in the past 2 years, presence of active infections (tuberculosis and hepatitis), pregnant women or attempting to become pregnant, and lactating mothers. After initial screening consultation, Phase I therapy was instituted to obtain optimal plaque control.
Oral hygiene instructions, ultrasonic scaling, and coronal polishing were done 1 month before the surgery. To assess the gingival health during the course of the study, the gingival index by Loe and Silness and the plaque index by Silness and Loe were employed., A single examiner performed all the measurements, with a UNC-15 probe. The clinical measurements were observed to the nearest millimeter in the mid-buccal region of the treatment tooth and included: probing depth (PD), GR depth (GRD), GR width (GRW) 1 mm apical to the cementoenamel junction (CEJ), WKG, and gingival thickness (GT) measured at the midpoint of apico-coronal WKG. The GT was assessed using a digital Vernier caliper and an endodontic finger spreader with an rubber stop, inserted perpendicular to the gingival tissue, rounded to nearest 0.1 mm. Clinical attachment level (CAL) was computed as the sum of PD and GRD. Wound healing was recorded at 1 month postsurgically with wound healing index. Scoring criteria comprised Score 1 – uneventful wound healing with no gingival erythema, edema, suppuration, flap dehiscence, or patient discomfort, Score 2 – uneventful wound healing with mild gingival changes but no suppuration, and Score 3 – poor wound healing with significant gingival changes. The esthetic outcome of the procedure in regard to patient's opinion was recorded dichotomously, as satisfactory or nonsatisfactory, 1 year postoperatively.
With strict aseptic precautions, 24% ethylenediaminetetraacetic acid was applied over the exposed root surface to condition the root and rinsed with saline. Two coronal stops for sutures were placed in the interproximal region bridging the teeth with light-cure composite without primer application. This is to facilitate easy composite clearance at suture removal stage and to prevent apical relapse of marginal tissue during initial stages of healing.
Local anesthesia using 2% xylocaine hydrochloride with adrenaline (1:80,000) was injected. All the surgical procedures were carried out by a single operator, thus avoiding surgeon-related bias. The saddle flap design began with an intrasulcular incision on the recession site, which was followed by the horizontal saddle incision in the adjacent teeth [Figure 1]. Teeth on either side of the recession site were included to facilitate tension-free coronal repositioning. The submarginal part of the incision on the recession site was planned keeping the depth of recession as guide. It was accomplished by marking GRD on both mesial and distal surfaces, starting from proximal CEJ of the recession site, extending over the attached gingiva of adjacent teeth in a saddle-like fashion. A split-thickness oblique incision was given from this point extending 2 mm submarginally over the adjacent teeth [Figure 2]. Both the oblique incisions were connected with the full-thickness sulcular incision over the recession site. The wing of the flap now demarcates the surgical and anatomical papillae.
Coronal to the denuded root surface, the elevation was carried out with a blunt elevator, to raise a full-thickness flap. Over the oblique incisions, scalpel held parallel to the long axis of the tooth was used to dissect the tissue in split-thickness technique, to avoid unnecessary bone exposure. Beyond the MGJ, split-thickness elevation was done. Once the coronal mobility was deemed adequate (flap being passively adapting coronal to CEJ), each surgical papilla was exactly repositioned in the interdental area over the previously de-epithelized anatomical papilla, and the sling sutures were given with 5–0 expanded polytetrafluoroethylene over the composite stop in the interproximal region [Figure 3].
All the above mentioned steps have been illustrated clinically in case number 1 [Figure 4], [Figure 5], [Figure 6], [Figure 7], [Figure 8]. An adequate dose of analgesics (tablet ibuprofen 400 mg, BD – 3 days) was prescribed to the patients for postoperative comfort. Patients were advised to use chlorhexidine mouthrinse (0.12%) twice daily for 1 min and to abstain from brushing in the surgical area for 2 weeks. On the 14th postoperative day, sutures and composite stops were removed. Mechanical plaque control using soft toothbrush and roll technique was recommended. The patients were reviewed every 15 days for the first 2 months, followed by every 2 months as part of the study protocol. The preoperative and postoperative of another case have been depicted [Figure 9] and [Figure 10].
|Figure 4: Case 1: Preoperative – Isolated Miller's Class I recession in relation to 24|
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|Figure 9: Case 2: Preoperative view – Isolated Miller's Class I recession in relation to 14|
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| Results|| |
All the clinical parameters pre and postsurgery at 1 year were recorded [Figure 4], [Figure 8], [Figure 9] and [Figure 10] and tabulated [Table 1]. The statistical analysis was conducted using the Wilcoxon signed rank test and Chi square test with SPSS Version 20, IBM, Newyork, USA. At the end of study period, the PD (P < 0.01), CAL (P < 0.01), WKG (P < 0.01), GRD (P < 0.01), KT (P < 0.01), and GT (P < 0.01) were found to be statistically significant, while GI (P = 0.79) was deemed nonsignificant [Table 2].
|Table 2: Comparison of efficacy variables at baseline and 1 year postoperative|
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| Discussion|| |
GR is a common entity and a major esthetic concern observed throughout the population. In the present era of minimally invasive dentistry, surplus techniques are available to manage GR to obtain better esthetic results. Among which, some of them are better suited for the management of isolated defects. CAF technique is one such surgical option used commonly in recession coverage, based on the principle of coronal shifting of the gingiva over the previously denuded root surface, leading to coverage.,
Saddle flap technique, presented in this article, was termed so, as the incision design resembled the “saddle of horse,” raising a split–full-split thickness flap, releasing a portion of attached gingiva. Another advantage of saddle design noted by the authors is the maintenance of the papillary integrity and associated critical interdental arterial plexus. The modified CAF design presented contributes a number of unique and distinctive advantages for achieving maximum root coverage. The full-thickness flap was elevated coronal to the recession site in order to compensate for the thin biotype present in the gingival marginal area, whereas on the adjacent tooth and the area apical to the mucogingival junction, a split-thickness flap was raised, thereby preventing unnecessary denudation of bone. This technique not only allows improved visualization and access of the treated site but also judicious flap elevation. In addition, an oblique incision extending 2 mm submarginally over the adjacent teeth was given to avoid vertical incision, in view of esthetic concern. The incisions were placed in such a manner that the chances of bleeding would be less as they were in accordance with the craniocaudal orientation of the branches of the anterior superior alveolar artery. After rendering the flap tension free, the flap was coronally positioned and sling sutures were placed to stabilize the surgical papillae over the interdental connective tissue bed (anatomical papillae) which permitted precise flap adaptation.
The present surgical modification showed improvement in terms of both clinical parameters and esthetics. A reduction in mean GRD was observed from 2.45 ± 0.59 mm at baseline to 0.15 ± 0.24 mm 1 year postoperatively which represented mean root coverage of 98%. Furthermore, there was a statistically significant difference in the mean values of GRW from 1.15 ± 0.1 preoperatively to 0.41 ± 0.21 postoperatively.
Cortellini et al. (2009) reported greater postoperative comfort with CAF alone when compared to CAF with connective tissue graft method. The above observation held valid in this study also, as there was no need for a second surgical site to harvest connective tissue. Thus, saddle flap technique may be regarded as a predictable, effective, time, and cost-effective root coverage procedure. However, further investigation through randomized controlled trials to prove its plausibility is imperative.
| Conclusion|| |
In contemporary periodontal practice, the unremitting pursuit is not only at the reconstruction of biological and functional aspect of the periodontium but also the patient-oriented esthetic acceptance. Considering this, the saddle technique successfully achieved patient satisfaction in terms of both esthetics and complete root coverage. Isolated GR is a common clinical entity creating such a dilemma, with an array of surgical options proposed. Saddle technique, a modified CAF, provides good root coverage using a simple modification in the incision design. This, in turn, was seen to affect the overall treatment outcome in terms of related clinical parameters such as CAL, WKG, GT, and GRD along with satisfactory patient-oriented outcomes.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7], [Figure 8], [Figure 9], [Figure 10]
[Table 1], [Table 2]