Detection of posterior superior alveolar artery using multi-detector row CT: a retrospective study focused on age-related changes.

Purpose: The posterior superior alveolar artery (PSAA) is a branch of the maxillary artery that supplies the lateral sinus wall and overlying membrane. This artery is one among several arteries in which arterial damage during surgery can cause massive and fatal bleeding. The purpose of this study was to detect the PSAA using multi-detector row computed tomography (MDCT) by age.

Spectrophotometric determination of platelet counts in platelet-rich plasma.

Background: Platelet-rich plasma (PRP) is widely used in regenerative dentistry and other medical fields. However, its effectiveness has often been questioned. For better evaluation, the quality of individual PRP preparations should be assured prior to use.

An on-site preparable, novel bone-grafting complex consisting of human platelet-rich fibrin and porous particles made of a recombinant collagen-like protein.

Platelet-rich fibrin (PRF) is widely used in regenerative medicine. Nonetheless, major issues include its controversial effects on bone regeneration and a lack of quality-assured glass tubes required for coagulation. We used porous particles (FBG) comprising a recombinant RGD motif-enriched collagen I-like protein to activate the coagulation pathway and examined the effects of the resulting PRF-FBG complex on bone regeneration.

An Evaluation of the Accuracy of the Subtraction Method Used for Determining Platelet Counts in Advanced Platelet-Rich Fibrin and Concentrated Growth Factor Preparations.

Platelet concentrates should be quality-assured of purity and identity prior to clinical use. Unlike for the liquid form of platelet-rich plasma, platelet counts cannot be directly determined in solid fibrin clots and are instead calculated by subtracting the counts in other liquid or semi-clotted fractions from those in whole blood samples. Having long suspected the validity of this method, we herein examined the possible loss of platelets in the preparation process.

Computed Tomography Findings of Mandibular Nutrient Canals.

Introduction: The purpose of this study was to assess computed tomography (CT) findings of mandibular nutrient canals using CT images.

Materials And Methods: We retrospectively analyzed the mandibular CT images of 194 consecutive patients. For image analysis such as canal prevalence, location, number, size, shape, and the CT value of nutrient foramina were determined using CT axial images of 0.

Assessment of relationships between implant insertion torque and cortical shape of the mandible using panoramic radiography: preliminary study.

Purpose: To assess the relationship between mandibular cortical bone status as determined with panoramic radiography and insertion torque (IT) in implant treatment.

Materials And Methods: Using panoramic radiographs, two dental radiologists assessed patients' mandibular cortical bone status and classified them into two groups-normal or abnormal (mildly, moderately, or severely resorbed)-based on morphologic features of the mandibular cortical bone margins. Kappa coefficients between the two dental radiologists were calculated to determine interexaminer variability.