医学部
Profile Information
- Affiliation
- School of Medicine Faculty of Medicine, Fujita Health University
- Degree
- 博士(歯学）
- J-GLOBAL ID
- 201501009767547629
- researchmap Member ID
- 7000013006
Papers
6-
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology, 29(4) 350-357, Jul 1, 2017 Peer-reviewedObjective The usefulness of computed tomography (CT) for measuring bone defect volume in the alveolar cleft has attracted considerable attention in recent years. Moreover, 320-row area detector CT (320-ADCT) is currently widely utilized. This technology helps to acquire smooth three-dimensional images, with a reduced exposure dose and improved image resolution, similar to those of dental cone-beam CT (CBCT). We compared the exposure dose of 320-ADCT with that of dental CBCT, and analyzed the reliability of a volumetric method for measuring bone defects in the alveolar cleft using 320-ADCT, both experimentally and clinically. Methods We performed thermoluminescent dosimeter measurements using an anthropomorphic RANDO phantom. Additionally, we evaluated the reproducibility of the volumetric measurement method for the bone defective volume using CT images of simulated bone defects in pigs. In addition, we evaluated the inter-rater reliability of the volumetrically measured values of bone defects in 20 patients with a unilateral cleft. Results The exposure doses of 320-row area detector CT and CBCT were similar. The errors of volumetric values between calculated and actual bone defects created in pigs were up to 7.6%. Inter-rater reliability of the calculated volumes of bone defect was evaluated as high, according to Bland–Altman analysis. Conclusions CT examination with a low exposure dose and precise analysis is feasible without the use of highly specialized dental CBCT.
-
Dental, Oral and Craniofacial Research, 3(4) 1-4, Apr, 2017 Peer-reviewed
-
CLEFT PALATE-CRANIOFACIAL JOURNAL, 53(2) 157-160, Mar, 2016 Peer-reviewedObjective: Our objective is to determine appropriate specifications for smaller tongue blade for Japanese pediatric patients with cleft palate (CP) and mandibular micrognathia. Patients: We investigated 59 patients who underwent palatoplasty. Patients were divided into two groups: the micrognathia (MG) group consisted of 11 patients and the normognathia (NG) group consisted of 48 patients. Interventions: The following five items were investigated retrospectively: (1) gender, (2) cleft type, (3) age at the time of surgery, (4) weight at the time of surgery, and (5) distance from the tongue blade base to the posterior pharyngeal wall (Dis). Results: There was a significant difference (P < .01) in age at the time of surgery and in Dis between groups, but not in weight. The minimum values were 55 mm for the MG group. As for correlations between age and weight at the time of surgery, the P values for the MG and NG groups were .993 and .052, respectively. As for correlations between weight at the time of surgery and Dis, the P values for the MG and NG groups were .987 and .099, respectively. Conclusions: It was difficult to predict Dis on the basis of the patient's age and weight measured preoperatively. The minimum Dis was 55 mm, equal to the length from the base to the tip of the Dingman Mouth Gag tongue blade currently in use, suggesting that a tongue blade of approximately 50 mm in length, shorter than the current minimum specifications, may be appropriate.
-
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology, 28(3) 277-282, Mar, 2016 Peer-reviewed
-
Journal of Medical Case Reports, 9(1) 41, Dec, 2015 Peer-reviewed
Misc.
19-
J.Jpn.Cleft Palate Assoc., 40(1) 23-29, Apr, 2015 Peer-reviewedIn recent years, some reports on postoperative computed tomography evaluations of secondary bone grafting into the alveolar cleft have been published. Here, we report a retrospective study on the prognostic factors of bone bridge formation after secondary bone grafting into the alveolar cleft, evaluated with computed tomography.<br>In 13 cases, we evaluated the bone bridge formations at a total of 9 points: each of the 3 points of the buccal, central, and palatal sites in 3 different height slices of the central incisor in the cleft side (root tip, middle, and alveolar crest).<br>The frequencies of bone bridge formations were as follows: all cases in middle/buccal, 9 (69.2%) in middle/central, 8 (61.5%) each in root tip/buccal and alveolar crest/central, 6 (46.2%) in alveolar crest/buccal, 5 (38.5%) in middle/palatal, 4 (30.8%) in alveolar crest/palatal, and 3 (23.1%) each in root tip/central and root tip/palatal. Moreover, a univariate logistic regression analysis clearly showed that the preoperative width of the alveolar cleft could be a predictive factor of postoperative bone bridge formation in the central and palatal regions at the middle height of the tooth root.
-
J.Jpn.Cleft Palate Assoc., 39(1) 1-6, 2014 Peer-reviewedIn our center, oral surgeons discuss presurgical orthodontic treatments and the preferable timing for alveolar bone grafting (BG) with orthodontic dentists.<br>We evaluated the results of BG retrospectively.<br>Objects and methods: Among cases given BG in 2007-2010, we focused on 27 unilateral cleft lip alveolar (UCLA) cases and 58 unilateral cleft lip alveolar and palate (UCLP) cases, and investigated the gender distribution, age at surgery, cleft width, presence and eruption of lateral incisors in the cleft side, eruption and root formation of canines in the cleft and non-cleft sides at surgery, weight of transplanted bone, and marginal bone level obtained, and compared them between the UCLA and UCLP groups.<br>Results: 1. There were 13 males and 14 females with UCLA, and 35 males and 23 females with UCLP. Age at surgery was 118.4+/-20.5 (92-171) months in the UCLA group, and 119.1+/-14.7 (89-168) months in the UCLP group. There was no significant difference in gender distribution or age at surgery between both groups.<br>2. Cleft width (at alveolar crest and nasal floor) was 5.7+/-2.3 and 12.1+/-4.5mm in the UCLA group, and 7.3+/-2.7 and 14.6+/-3.9mm in the UCLP group. Weight of transplanted bone was 2.1+/-1.0g in the UCLA group, and 2.5+/-1.0g in the UCLP group. Thus, there were significant differences between both groups (<i>p</i> < 0.05).<br>3. At surgery, canines erupted in 8 UCLA and 5 UCLP cases in the cleft side. There was a significant difference between both groups (<i>p</i> < 0.05).<br>4. Canine root formation was more than half full in 14 UCLA and 11 UCLP cases in the cleft side, in 13 UCLA and 12 UCLP cases in the non-cleft side. Canine root formation was significantly faster in the UCLA group than the UCLP group in both sides (<i>p</i> < 0.05). <br>5. For the evaluation of marginal bone level, Enemark's level of more than 2 was obtained in 96.3% of UCLA and 98.3% of UCLP cases. There was no significant difference between both groups. <br>Conclusion: In this study, significant differences were detected in cleft width, weight of transplanted bone, eruption of canines in the cleft side, and root formation of canines in the cleft and non-cleft sides at surgery between both groups, but marginal bone formation was excellent in both groups.
-
J.Jpn.Cleft Palate Assoc., 38(1) 29-34, 2013The Cleft Lip and Palate Centre of Fujita Health University Hospital was started in 1992, and it has been treating congenital anomalies of the jaw and face including cleft lip and palate.<br>A long period, various knowledge and good techniques are required for treating cleft lip and palate. With the team approach, it is important how the team is managed and operated. The styles of the medical treatment team can be considered as follows: (a) relay system, (b) conductor system, (c) coordinator system, (d) assembly system, etc.<br>The Fujita Health University Hospital Cleft Lip and Palate Centre currently uses (c) the coordinator system. More than 1600 patients have been treated so far. In future, it is necessary to create a more exact and efficient team system.