PMC7479466_01
Presurgical periapical radiograph of the right third molar (test site) (a). Fresh post-extractive socket (b). The Smart Dentin Grinder  (c) used for the test and the fragments of the tooth before being grinded (square). The dentin particulate filling the socket (d). The sutured wound (e). Periapical radiograph of the grafted socket taken after 15 days from the surgery (f). Soft (g) and hard (h) tissues healing at 180 days after surgery.
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fig1
To keep the irradiation as low as reasonably achievable (ALARA), the authors decided to not repeat the radiographic exam if small imperfections were present (Figures 1 and 2). Immediately after the extraction (Figure 1), the right molar's fragments were grinded for 3 seconds (300-1200 mum) by the use of the Smart Dentin Grinder  (KometaBio, Fort Lee, NJ, USA) and then immersed into a 0.5 M NaOH and 20% ethanol solution for 10 minutes, in order to dissolve all the organic remains from the tubules.
Periapical radiographs of the grafted site (a) and the control site (b) before surgery (T0) and after 15, 90, and 180 days. Since the positioning of the film in a so posterior area resulted difficult, a rigid support held by the patient was adopted instead of the Rinn centrator. Adjustments to tilted images were performed by the same software used for the measurements.
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fig2
To keep the irradiation as low as reasonably achievable (ALARA), the authors decided to not repeat the radiographic exam if small imperfections were present (Figures 1 and 2). Measurements were performed from the CEJ to the bone peak distal to the second molar, on a line perpendicular to the one passing through the mesial and distal projection of the CEJ (Figure 2).