Density value means in the evaluation of external apical root resorption: anin vitrostudy for early detection in orthodontic case simulations

Abstract

The use of the SRTs was significantly more accurate than the use of the brackets alone for digital subtraction radiography reconstructions. This model shows promise for detecting EARR prior to a noticeable decrease in root length. It may be useful for early detection of resorptive lesions during routine orthodontic treatment.

Method to Evaluate Inflammatory Root Resorption by Using Cone Beam Computed Tomography

“…Several aspects of inflammatory root resorption (IRR), such as prevalence, etiologic factors, and classification based on dental surface, progression, extension, and pathologic mechanisms, have been extensively discussed (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). However, IRR is an asymptomatic lesion that is difficult to diagnose and treat (1)(2)(3)(4).…”

Pixel value analysis for detection of simulated early external root resorption

“…In the present study, simulated ERR was induced chemically because this procedure affords ill-defined margins that are similar to those with ERR of biological origin and clinical condition. 14,15 In addition, ERR was confirmed by quantification of the calcium removed using atomic absorption spectrophotometry, 14 and the teeth subjected to the longest ERR induction time exhibited the greatest calcium release (Table 1 and Pearson's correlation). Therefore, this method of inducing root resorption is practical, simulates the clinical conditions of ERR, and might be applied in similar studies.…”

“…14,15 Thirty teeth were subjected to this treatment. Induction was performed 24 hours after the application of the insulating material and consisted of the immersion of the teeth in acid for time periods of three different lengths (10, 30, and 60 minutes).…”

“…ERR was confirmed by calcium quantification of the acid solution using atomic absorption spectrophotometry using a colorimetric method (Thermo Scientific, Waltham, USA), after each step of the demineralization process. 14 To analyze resorption using the pixel values, digital images of the teeth were acquired using the Digora ™ (Soredex, Orion Corporation, Helsinki, Finland) and Visualix ™ eHD (Gendex, Dental Systems, Milan, Italy) systems.…”

Root Resorption in Orthodontics: An Evidence-Based Approach

“…As root resorption is often asymptomatic, radiographic images constitute the best way to detect the condition and measure its severity in order to establish an early diagnosis (Eraso et al, 2007), especially control radiographs obtained after six to 12 months of orthodontic treatment (Artun et al, 2009;Weltman et al, 2010). Digital radiography (DR) and digital subtraction radiography (DSR) can be used for the detection of apical root resorption as small as 0.5 mm and lingual resorption of 1 mm or more.…”