دراسة سريرية مقارنة للعلاقة بين أبعاد إصابة مفترق الجذور من الدرجة الثانية و المشعرات السريرية بعد المعالجة بليزر Er : Yag مقابل المعالجة الجراحية التقليدية

الملخص EN

Background and Objective: Furcation involvement occurs in the term of chronic periodontitis, and gives the involved tooth worse prognosis, so that it represents a problem for diagnosis and treatment.

The aim of this study was to compare surgical treatment of second degree- furcal involvement in mandiblur molar using Er:YAG laser versus traditional surgery from the side of relationships between furcal involvement measurements and clinical assessments in disease and during healing process.

Materials and Methods: 20 second degree- furcal involvements in mandibular molars were randomizely treated either surgical treatment with Er:YAG laser (test group), or surgically with manual instruments (control group).

Clinical assessments were evaluated at baseline, then 3 months postoperatively, included: Vertical probing depth (PD), gingival recession (GR), clinical attachment level (CAL), and horizontal probing depth (HOD), to investigate the potential relationships between them and measurements of furcal lesion at baseline and 3 months after treatment.

The mentioned measurements were: The distance between cemento-enamel junction and furcation roof \ fornix (tooth trunk), the distance between furcation roof and alveolar access (real height of lesion), the distance between roots at the alveolar access (lesion width), and the distance between cemento-enamel junction and alveolar access (height of periodontal lesion).

The t student test (P = 0.05), and Person correlation modulus were used for statistical analysis.

Results: Results indicated a correlatioship between PD at baseline and tooth trunk, and between PD again and furcation width 3 months after treatment in control group only.

There was a similar relationship between GR and the whole periodontal lesion height, in control group, and the total cases before and after treatment.

The same relationship was observed between GR and furcal lesion height at baseline in control and test groups and moderately in all cases 3 months after treatment but not in each group separately.

A relationship between CAL scores and the height of periodontal lesion was revealed at baseline and 3 months after treatment in control group and all cases, so that between CAL and the real height of lesion in all cases before and 3 months after surgery.

Finally, a relationship between HOD and the tooth trunk was observed in test group at baseline, similarly between HOD and distance between the real height of lesion in all cases.

Conclusion: This study indicated potential relationships between clinical assessments of furcal- involved teeth and measurements of the furcal lesion, those could affect disease progress and healing after surgical treatment conventionally or using Er:YAG laser.