• Imaging Science in Dentistry
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• v.51 no.3
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• pp.271-278
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• 2021

Purpose: This study aimed to investigate the panoramic imaging features of cleidocranial dysplasia (CCD) with a relatively large sample. Materials and Methods: The panoramic radiographs of 40 CCD patients who visited Seoul National University Dental Hospital between 2004 and 2018 were analyzed. Imaging features were recorded based on the consensus of 2 radiologists according to the following criteria: the number of supernumerary teeth and impacted teeth; the shape of the ascending ramus, condyle, coronoid process, sigmoid notch, antegonial notch, and hard palate; the mandibular midline suture; and the gonial angle. Results: The mean number of supernumerary teeth and impacted teeth were 6.1 and 8.3, respectively, and the supernumerary teeth and impacted teeth were concentrated in the anterior and premolar regions. Ramus parallelism was dominant (32 patients, 80.0%) and 5 patients (12.5%) showed a mandibular midline suture. The majority of mandibular condyles showed a rounded shape (61.2%), and most coronoid processes were triangular (43.8%) or round (37.5%). The mean gonial angle measured on panoramic radiographs was 122.6°. Conclusion: Panoramic radiographs were valuable for identifying the features of CCD and confirming the diagnosis. The presence of numerous supernumerary teeth and impacted teeth, especially in the anterior and premolar regions, and the characteristic shapes of the ramus, condyle, and coronoid process on panoramic radiographs may help to diagnose CCD.

• Journal of Dental Anesthesia and Pain Medicine
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• v.24 no.4
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• pp.285-295
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• 2024

Background: In human dentition, the most commonly impacted teeth are the mandibular third molars (M3M). The removal or extraction of these teeth often causes anxiety in patients due to the perceived pain involved in the process. Therefore, pain must be effectively managed using anesthesia. The use of newer local anesthetic drugs can help minimize side effects and drug interactions. Traditionally, adrenaline is used as a vasoconstrictor along with lignocaine. When combined with lignocaine, the alpha agonists dexmedetomidine and clonidine can extend the duration of anesthesia, thereby reducing the need for additional pain-relieving medications. Methods: This study used a randomized, triple-blind, parallel-arm design. Sixty patients were screened, and 45 systemically healthy patients requiring unilateral surgical removal of impacted mandibular third molars with similar difficulty (moderate-to-difficult according to the Modified Pederson's Index) were included in the study. Patients were allocated into three groups as follows: Group A: 2% Lignocaine Hydrochloride with 1:100,000 Adrenaline, Group C: 2% Lignocaine Hydrochloride with 15 ㎍/mL Clonidine, and Group D: 2% Lignocaine Hydrochloride with 1 ㎍/mL Dexmedetomidine. The evaluated parameters were the time of onset of anesthesia, depth of anesthesia, hemodynamic parameters, and duration of postoperative analgesia. Results: Group D had a faster onset of action and prolonged duration of postoperative analgesia compared with Groups A and C. No statistically significant differences were observed between the three groups in terms of the depth of anesthesia and hemodynamic parameters. Conclusion: Group D exhibited a significantly more rapid onset of anesthesia than Groups A and C, and the postoperative analgesic effect in Group D was significantly prolonged (7.22 hours) compared with that in Groups A (4.54 hours) and C (2.1 hours). Patients receiving the Group D solution experienced an extended period of comfort without the need for analgesics for up to 7.22 hours post-procedure.

• The korean journal of orthodontics
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• v.27 no.3 s.62
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• pp.515-521
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• 1997

The purpose of this case report is to provide the information of the treatment of the impacted-displaced teeth associated with the disease in the jaw. A 10-year-old boy presented with a large radiolucent lesion accompanying the displacement of the second premolar and first molar in the left mandibular body area. The lesion was diagnosed as unicystic ameloblastoma. As a surgical procedure for the present case, marsupialization was executed. For the eruption of displaced impacted teeth, no orthodontic intervention was done for second premolar while a helical spring was used for the forced eruption of first molar. Goof occlusion was established by simple orthodontic intervention.

• The Journal of the Korean dental association
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• v.41 no.1 s.404
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• pp.42-47
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• 2003

Dental professions recommend that mandibular impacted third molar be extracted for the prevention of osteomyelities crneoplasm or for the treatment of halitosis. Even the possibility of emergence of unexpected halitosis after the preventive extraction exists, there are few studies describing the unexpected halitosis. This study intended to measure the emergence of halitosis after extraction of mandibular impacted third molar. Thirty-eight patients who visited Daejin Medical Center participated in this study. Halitosis was objectively measured using Halimeter in 3 intervals-before, after I day, after 7 days. Third factors, scaling and gender, which may influence the halitosis were analyzed with stratification. This study finds that in general halitosis decreased after 1 day but increased after 7 days. Scaling was helpful in decreasing halitosis and women have less severe halitosis than men. The effects of time interval(p<0.05), gender(p=0.836), and scaling(p=0.7929) on the severity of halitosis were not statistically significant. However, since this study's patients are neither a representative sample nor a random sample, all data interpretation was focused on clinical significance instead of conventional statistical significance. Clinical significance of this study's findings are: 1) scaling should be conducted in advance, 2) men should be notified of the higher possibility of halitosis.

• Journal of the korean academy of Pediatric Dentistry
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• v.41 no.2
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• pp.166-173
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• 2014

The basal cell nevus syndrome is also known as the Gorlin-Goltz syndrom. It is a dominant autosomal disorder which is characterized by keratocystic odontogenic tumors in the jaw, skeletal abnormalities, and multiple basal cell nevi carcinomas. This study reports an 11-year-old boy with multiple odontogenic keratocysts in the jaw, hypertelorism, and frontal bossing. When a young patient has cystic lesions with an impacted permanent teeth, it is important to preserve the teeth. For a growing patient with impacted permanent teeth, a more conservative method is suggested, which will enable the preservation the permanent teeth in Gorlin-Goltz syndrome.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.33 no.2
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• pp.185-189
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• 2011

Tooth impaction represents the stop of eruption by clinical and radiographical disturbance in eruption path or the dislocation of tooth germ. The most common factor in tooth eruption disorders are spacial deficiency with other causes reported to be odontogenic tumors, periodontal ligament injury, etc. Impaction of the mandibular second molar is relatively rare and reported in about 3 out of 1,000 people. Because the second molars tend to erupt in a mesial direction, this situation can lead to serious problems if untreated, including dental caries, periodontal disease and root resorption of the first molar. Treatment of this problem includes, surgical repositioning and orthodontic forced eruption. Because each procedure have the definite advantages and disadvantages, and influenced by circumferential environment, these have limits for successfu1 recovery as independent treatment. In a case at St. Mary's Hospital, we performed successful correction of a horizontal impacted mandibular second molar using a miniplate skeletal anchorage system. We introduce this treatment as a valid method for an impacted second molar and consider a oromaxillofacial surgeon's role in tooth movement treatment.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.28 no.6
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• pp.565-569
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• 2006

The purpose of this study was to assess the influence of the presence and impacted state of the mandibular third molars on the incidence of mandibular condyle fracture. A retrospective study was designed for patients presenting to the Department of Oral and Maxillofacial Surgery, Kyungpook National University Hospital and Tae-gu Fatima Hospital for treatment of mandibular fractures from January 2003 to January 2006. The independent variables in this study were the presence, degree of impaction of third molars, and the outcome variables were the incidence of mandibular condyle fractures. Hospital charts and panoramic radiographs were used to determine and classify these variables. The demographic data included age, sex, mechanisms of injuries and number of mandibular condyle fractures. The study sample comprised 136 mandibular condyle fractures in 105 patients. Result of this study demonstrated a statistically significant difference in ipsilateral condyle fractures and mandibular third molar absence(P=0.032) and bilateral condyle fractures without another fracture and mandibular third molar absence(P=0.028).

• Korean Journal of Human Ecology
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• v.23 no.2
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• pp.329-341
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• 2014

This study examined the effects of cultural communication on the fashion distribution type and the shopping benefit in fashion cultural complex space. Surveys period was from Sep. 17th to Sep. 21st in 2012. The Subjects of this study were the young 207 people who had shopping experiences in fashion cultural complex space in their 20s~30s. The data were analyzed by a reliability analysis(Cronbach's ${\alpha}$), factor analysis and regression analysis. The main results of this study were summarized as follows. First, cultural communication in fashion cultural complex space were impacted by cultural brand, cultural display, cultural support and beneficial effect of culture. Second, customers pursued the shopping benefits to get social value, personal pleasure, individual style and economic value. Third, the preference of fashion outlet was effected by cultural brand and cultural display. The beneficial effect of culture and cultural brand influenced on department store preference. The preference of fashion multi-brand shop was impacted by cultural brand, cultural support and beneficial effect of culture. Fourth, cultural communication in fashion cultural complex space had an effect on pursuing shopping benefits. Fifth, customer's demographic characteristics impacted on cultural brand, cultural display and beneficial effect of culture. Especially, these 3 cultural communications were effected by monthly average fashion spending than age/total income.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.23 no.3
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• pp.238-243
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• 2001

Purpose : The purpose of this study was to determine radiologic variables affecting extraction of impacted mandibular third molar. Materials and Methods : This study was investigated on 44 consecutive extractions of unilateral impacted mandibular third molars (Male;34, Female;10, Mean age;24.98, Age range;19-35). Fourteen radiologic variables, which were actual value except only one, were evaluated to establish their relation to the operation time. The Pearson correlation coefficient and Stepwise procedures for regression analysis were carried out. Results : Eight variables (depth, angulation, ramus width, relationship to the second molar, distal ramus depth, mesial ramus depth, mesial periodontal ligament width and follicle) showed a statistically significant relation to the operation time(Pearson correlation coefficient, p<0.05). Two variables, depth and mesial periodontal ligament width, showed the most powerful and just relation to the operation time($r^2$ = 0.349, p<0.05). Conclusion : This study shows that our results can help general practioner to estimate the operation time of extraction of impacted mandibular third molars by measuring two radiologic variables ; depth and mesial periondontal ligament width.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.32 no.3
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• pp.256-259
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• 2010

Impacted supernumerary anterior teeth (mesiodens) usually are removed surgically with drug sedation and local anesthesia. After extraction of mesiodens, the wound are sutured and removable resin plate is then applied. In this operation, the postoperative bleeding and infection is likely to occur owing to postoperative accumulation of hematoma & seroma, psychologic stress and other contaminated factors (resin plate, poor oral hygiene, etc). So, the authors established the immediate rubber & iodoform gauze drainage into the sutured wound of mesiodens extraction for the prevention of postoperative bleeding and infection. The removable resin splint are not used because of the poor oral hygiene and economic factor. The results were more favorable without the postoperative blood oozing & wound infection in the dentistry (OMFS) of Wonju Christian Hospital.