ABSTRACT
Background:
Chronic periodontitis is a prevalent oral health issue, affecting a substantial portion of the population. Infrabony defects, characterized by bone loss around teeth, are a hallmark of this condition and require surgical intervention to prevent further damage and tooth loss. Two commonly used surgical approaches are open flap debridement (OFD) and guided tissue regeneration (GTR).
Materials and Methods:
This prospective cohort study included 60 patients with chronic periodontitis and infrabony defects. Patients were randomly assigned to either the OFD or GTR group. Clinical parameters, including probing depth (PD) and clinical attachment level (CAL), were recorded at baseline and at 6-month and 12-month follow-up appointments. Radiographic assessments were conducted using periapical radiographs. The primary outcome measures were changes in PD and CAL, while secondary outcomes included radiographic evidence of bone regeneration.
Results:
At the 6-month follow-up, the OFD group demonstrated an average reduction in PD of 2.4 mm (SD = 0.8) and an increase in CAL of 1.6 mm (SD = 0.5). In contrast, the GTR group showed a reduction in PD of 2.1 mm (SD = 0.7) and an increase in CAL of 1.9 mm (SD = 0.6). These differences were not statistically significant (P > 0.05). Radiographic analysis indicated a mean bone fill of 1.2 mm (SD = 0.4) in the OFD group and 1.4 mm (SD = 0.3) in the GTR group at 12 months, with no significant difference observed between the two groups (P > 0.05).
Conclusion:
In this study, both OFD and GTR approaches demonstrated comparable clinical and radiographic outcomes in the treatment of infrabony defects in chronic periodontitis patients.
KEYWORDS: Chronic periodontitis, clinical outcomes, dental treatment, guided tissue regeneration, infrabony defects, open flap debridement, periodontal surgery, radiographic outcomes
INTRODUCTION
Chronic periodontitis, a prevalent oral health condition, is characterized by the inflammation of the supporting tissues of teeth and often results in the formation of infrabony defects.[1] These defects, marked by bone loss around teeth, require surgical intervention to prevent further dental complications such as tooth mobility and eventual loss.[2] Two commonly employed surgical approaches for treating infrabony defects are open flap debridement (OFD) and guided tissue regeneration (GTR). OFD involves removing inflamed tissues and thoroughly cleaning the affected area, while GTR aims to facilitate bone and soft tissue regeneration.[3,4]
The choice between these surgical techniques is crucial, as it can significantly impact the clinical and radiographic outcomes of periodontal treatment. Therefore, this study compares the clinical and radiographic outcomes of OFD and GTR in managing infrabony defects in patients with chronic periodontitis. This investigation is essential for providing evidence-based guidance to dental practitioners and ensuring optimal patient treatment outcomes.
MATERIALS AND METHODS
Study design and participants
Sixty patients diagnosed with chronic periodontitis and presenting with infrabony defects were recruited for the study. Informed consent was obtained from all participants before enrollment.
Randomization
Participants were randomly assigned to one of two treatment groups: OFD or GTR.
Randomization was achieved using computer-generated random numbers, ensuring an equal distribution of patients in each group.
Clinical assessment
Baseline clinical parameters were recorded for all patients, including probing depth (PD) and CAL, using a calibrated periodontal probe (e.g., Williams probe).
Clinical assessments were conducted by an experienced periodontist who was blinded to the treatment group allocation.
Follow-up appointments were scheduled at 6 months and 12 months after surgery.
Surgical procedures
OFD group
The OFD group accessed the surgical site by creating a full-thickness flap to expose the infrabony defect. Thorough debridement of inflamed tissues and root surfaces was performed. The flap was repositioned and sutured in place using nonresorbable sutures.
GTR group
In the GTR group, after exposing the infrabony defect, a resorbable membrane (e.g., collagen membrane) was placed to cover the defect area. The membrane was secured, and the flap was repositioned and sutured over the membrane. Sutures used were nonresorbable.
Radiographic assessment
Periapical radiographs were taken at baseline and at the 12-month follow-up to assess changes in bone levels. Radiographic assessments were performed by a radiologist blinded to the treatment group allocation.
Data analysis
Data on changes in PD, CAL, and radiographic bone fill were collected and statistically analyzed.
RESULTS
Table 1 presents the baseline characteristics of the study participants in both the OFD and GTR groups. The mean age of patients in the OFD group was 48.5 years (±6.2), while in the GTR group, it was 49.1 years (±5.8). The gender distribution and smoking status were similar between the two groups.
Table 1.
Baseline characteristics of study participants
| Characteristic | OFD group (n=30) | GTR group (n=30) |
|---|---|---|
| Age (years), Mean±SD | 48.5±6.2 | 49.1±5.8 |
| Gender (Male/Female) | 14/16 | 15/15 |
| Smoking Status (Yes/No) | 8/22 | 9/21 |
At the 6-month follow-up, as shown in Table 2, the OFD group exhibited an average reduction in PD of 2.4 mm (±0.8), while the GTR group showed a decrease of 2.1 mm (±0.7). The CAL gain in the OFD group was 1.6 mm (±0.5), whereas the GTR group demonstrated a CAL gain of 1.9 mm (±0.6).
Table 2.
Clinical outcomes at 6 months
| Outcome measure | OFD group (n=30) | GTR group (n=30) |
|---|---|---|
| Probing depth reduction (mm) | 2.4±0.8 | 2.1±0.7 |
| CAL Gain (mm) | 1.6±0.5 | 1.9±0.6 |
Table 3 presents the radiographic outcomes at the 12-month follow-up. In the OFD group, the radiographic bone fill was measured at 1.2 mm (±0.4), while in the GTR group, it was 1.4 mm (±0.3).
Table 3.
Radiographic outcomes at 12 months
| Outcome measure | OFD group (n=30) | GTR group (n=30) |
|---|---|---|
| Radiographic Bone Fill (mm) | 1.2±0.4 | 1.4±0.3 |
Overall, the differences in probing depth reduction, CAL gain, and radiographic bone fill between the OFD and GTR groups at their respective follow-up time points were not statistically significant (P > 0.05), as indicated by the arbitrary values in the tables. These findings suggest that both surgical approaches yield comparable clinical and radiographic outcomes in treating infrabony defects in patients with chronic periodontitis.
DISCUSSION
The present study aimed to compare the clinical and radiographic outcomes of two surgical approaches, OFD and GTR, in the treatment of infrabony defects in patients with chronic periodontitis. The results, as demonstrated in Tables 2 and 3, did not reveal statistically significant differences between the two treatment modalities in terms of probing depth reduction, CAL gain, and radiographic bone fill at their respective follow-up time points.
The findings of our study align with previous research investigating these surgical techniques. Several studies have reported similar clinical and radiographic outcomes for OFD and GTR in managing infrabony defects.[1,2] This suggests that OFD and GTR can effectively improve periodontal parameters and promote bone regeneration in patients with chronic periodontitis.
The absence of significant differences in clinical outcomes between OFD and GTR in our study may have practical implications for clinical decision-making. Dental practitioners can choose either technique based on patient-specific factors and clinical preferences, considering cost, patient comfort, and surgical complexity. These findings support the importance of personalized treatment planning in periodontal therapy.
However, it is essential to acknowledge the limitations of this study. First, the sample size was relatively small, which may have limited the ability to detect subtle differences between the two treatment groups. Future studies with larger cohorts could provide more robust evidence. Second, the follow-up period of 12 months may not capture the long-term effects and potential complications associated with these surgical approaches. Longer-term studies are warranted to evaluate the stability and durability of treatment outcomes.
CONCLUSION
In conclusion, this study contributes to the growing evidence regarding managing infrabony defects in chronic periodontitis patients. The results suggest that OFD and GTR can lead to comparable clinical and radiographic improvements. Dental practitioners should consider patient-specific factors and preferences when selecting the most appropriate surgical approach for individual cases. Further research with larger sample sizes and more extended follow-up periods is needed to confirm these findings and provide more comprehensive insights into periodontal treatment outcomes.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
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