Reliability of Pederson Scale in Surgical Extraction of Impacted Lower Third Molars: Proposal of New Scale | Zendy

Mohamed Yaser Kharma | Zendy; Salah Sakka | Zendy; Ghassan Aws | Zendy; Basel Tarakji | Zendy; Mohammed Zakaria Nassani | Zendy

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Reliability of Pederson Scale in Surgical Extraction of Impacted Lower Third Molars: Proposal of New Scale

Author(s) -

Mohamed Yaser Kharma,

Salah Sakka,

Ghassan Aws,

Basel Tarakji,

Mohammed Zakaria Nassani

Publication year - 2014

Publication title -

journal of oral diseases

Language(s) - English

Resource type - Journals

eISSN - 2356-7538

pISSN - 2314-6516

DOI - 10.1155/2014/157523

Subject(s) - reliability (semiconductor) , scale (ratio) , index (typography) , molar , dentistry , reliability engineering , computer science , medicine , engineering , geography , power (physics) , physics , cartography , quantum mechanics , world wide web

The aim of this study was to evaluate the clinical reliability of the Pederson index in preoperative assessment of the difficulty of surgical removal of impacted mandibular third molars. Pederson index was found to be unreliable predictor of true difficulty with low sensitivity and specificity. A new index (Kharma scale), which takes into consideration the anatomical form of tooth roots, is proposed and evaluated both pre- and postoperatively. The results of the evaluation indicate that the new estimating index is more reliable and accurate measure than Pederson scale

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