Assessment of Location of the Mandibular Canal: Correlation Between Panoramic and Cone Beam Computed Tomography Measurements.

Purpose: To compare panoramic and cone beam computed tomography (CBCT) determinations of implant-to-mandibular canal (MC) dimensions in mandibular regions posterior to the mental foramen and to investigate whether factors such as gender, age, region, and vertical dimension influence correlation between the two techniques.

Materials And Methods: A retrospective analysis was carried out in 64 consecutive adult patients (42 females, 22 males; average age 57.1 ± 13.

Clinically important difference thresholds of the visual analog scale: a conceptual model for identifying meaningful intraindividual changes for pain intensity.

The aim of this study was to estimate a range of clinically important difference (CID) values of the visual analog scale for pain intensity (VAS-PI), and to assess the effect of patient baseline characteristics on VAS change scores. Data from a prospective cohort study with 678 patients with subacute and chronic temporomandibular disorder pain were analyzed. Patients were divided into 9 cohorts on the basis of the baseline VAS score and the duration of pain.

Structural characteristics of bilateral temporomandibular joint disc displacement without reduction and osteoarthrosis are important determinants of horizontal mandibular and vertical ramus deficiency: a magnetic resonance imaging study.

Purpose: To estimate in patients with temporomandibular joint (TMJ) arthralgia whether magnetic resonance (MR) imaging findings of bilateral TMJ disc displacement without reduction (DDwoR) and/or osteoarthrosis (OA) are determinants of horizontal mandibular and vertical ramus deficiencies.

Patients And Methods: Bilateral MR imaging of the TMJ was performed in 68 consecutive patients with TMJ arthralgia to identify those with bilateral TMJ DDwoR and/or OA. Linear and angular cephalometric measurements were performed to apply selected criteria of horizontal mandibular (gonion-menton [Go-Me] <73 mm and articulare-pogonion [Ar-Pog] <105 mm) and vertical ramus (articulare-gonion [Ar-Go] <45 mm) deficiencies.

Estimation of clinically important change for visual analog scales measuring chronic temporomandibular disorder pain.

Aims: To estimate the clinically important change (CIC) on a 100-mm visual analog scale for pain intensity (VAS-PI) by relating it to the patient's global impression of change (PGIC) in patients with chronic temporomandibular disorder (TMD) pain and to assess the dependency of the CIC on their baseline pain scores.

Methods: Data from a prospective cohort study with 588 patients with chronic TMD pain were analyzed. The CIC was estimated over a 3-month period, and receiver operating characteristic methods were used to assess the optimal cut-off point.

Sonography of periimplant buccal bone defects in periodontitis patients: A pilot study.

Objectives: The degree of marginal bone loss at buccal periimplant sites may now be measured noninvasively using sonography. The purpose of the present study was to assess the reproducibility and validity of linear measurements of periimplant buccal bone loss on sonographic images.

Study Design: In 25 patients with 29 buccal bone defects in the mandibular anterior region, the vertical distance between the upper thread of the implant and the most apical level of the marginal bone was evaluated sonographically by using a linear (B-scan) 12.

Magnetic resonance imaging predictors of temporomandibular joint pain.

Background: The authors conducted a study to evaluate whether temporomandibular joint, or TMJ, disorder subgroups are related to magnetic resonance imaging, or MRI, diagnoses of TMJ internal derangement, or ID; osteoarthrosis, or OA; effusion; and bone marrow edema.

Methods: The TMJ disorder group was composed of 118 subjects with TMJ pain who were assigned a clinical unilateral single diagnosis of a specific TMJ disorder. The control group consisted of 46 subjects who did not have TMJ pain.

Relative odds of temporomandibular joint pain as a function of magnetic resonance imaging findings of internal derangement, osteoarthrosis, effusion, and bone marrow edema.

Objective: The purpose of this study was to evaluate whether common magnetic resonance (MR) imaging variables such as temporomandibular joint (TMJ) internal derangement, osteoarthrosis, effusion, and bone marrow edema are predictive of the presence of TMJ pain.

Study Design: The relationship between TMJ pain and TMJ internal derangement, osteoarthrosis, effusion, and bone marrow edema was analyzed in MR images of 338 TMJs in 169 patients with a clinical diagnosis of TMJ pain and dysfunction. Criteria for including a patient with TMJ pain were a report of orofacial pain referred to the TMJ, with the presence of unilateral or bilateral TMJ pain during palpation, function, or unassisted or assisted mandibular opening.

Bone marrow edema of the mandibular condyle related to internal derangement, osteoarthrosis, and joint effusion.

Purpose: The purpose of this prospective study was to evaluate whether common magnetic resonance imaging (MRI) variables such as temporomandibular joint (TMJ) internal derangement, osteoarthrosis, and effusion may predict the diagnostic group of bone marrow edema of the mandibular condyle.

Materials And Methods: The relationship between bone marrow edema and TMJ disc displacement, osteoarthrosis, and effusion was analyzed in MRIs of 120 TMJs in 73 consecutive patients with TMJ pain and/or a clinical diagnosis of TMJ internal derangement type III (disc displacement without reduction). The diagnostic bone marrow edema group was comprised of 54 TMJs in 40 patients with a unilateral or bilateral MRI diagnosis of bone marrow edema.

Disk displacement of the temporomandibular joint: sonography versus MR imaging.

Objective: The purpose of this study was to determine the value of dynamic sonography in the evaluation of internal derangements of a temporomandibular joint (TMJ) during maximal mandibular range of motion.

Subjects And Methods: Maximal mandibular range of motion was performed during high-resolution sonography of the TMJ in 64 consecutive patients (128 joints; nine males and 55 females; age range, 17-65 years; mean age, 35 years 6 months), all of whom subsequently underwent MR imaging. MR imaging confirmed disk displacement with reduction in 27 joints and disk displacement without reduction in 60 joints of the 128 examined.

Comparing methods for diagnosing temporomandibular joint disk displacement without reduction.

Background: Research is needed to assess the validity of the Clinical Diagnostic Criteria for Temporomandibular Disorders, or CDC/TMD. The authors conducted a prospective, double-blind study to determine whether applying the specific CDC/TMD diagnosis of TMJ internal derangement, or ID, type III would demonstrate good agreement with diagnoses obtained by MRI.

Methods: The study comprised 138 TMJs in 69 subjects who had a clinical diagnosis of unilateral TMJ ID type III (disk displacement without reduction).

The biological concept of "internal derangement and osteoarthrosis": a diagnostic approach in patients with temporomandibular joint pain?

Objectives: We sought to investigate whether the finding of temporomandibular joint (TMJ)-related pain may be linked to magnetic resonance (MR) imaging findings of TMJ internal derangement and TMJ osteoarthrosis.

Study Design: The study consisted of 194 consecutive TMJ patients. Criteria for including a patient with a painful TMJ were as follow: report of orofacial pain in the TMJ, with the presence of unilateral or bilateral TMJ pain during palpation, function, and unassisted or assisted mandibular opening.

Clinical versus magnetic resonance imaging findings with internal derangement of the temporomandibular joint: an evaluation of anterior disc displacement without reduction.

Purpose: The purpose of this study was to investigate whether the clinical finding of anterior disc displacement without reduction (ADWOR) and pain in the temporomandibular joint (TMJ) is correlated to the magnetic resonance imaging (MRI) findings of TMJ internal derangement (ID).

Patients And Methods: The TMJ group was composed of 55 TMJ pain patients who were assigned a clinical diagnosis of unilateral ADWOR. The control group consisted of 58 nonpainful TMJ patients.