• Journal of Technologic Dentistry
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• v.38 no.1
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• pp.51-61
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• 2016

Purpose: This study was conducted to find oral health and eating attributes relating to the maxillary anterior teeth color and examine the meaning. Methods: This study aims to prepare the basic data of the teeth color by measuring analyze mode using the color of the maxillary anterior teeth(maxillary central incisor, lateral incisor, canine) of the dental patients as the dental colorimeter. Also, This researcher explained the purpose of this study to dental patients and got agreement of 111 patients(50 men and 61 women). We conducted the survey from 2 March to 25 May, 2015. So the color of total 333 teeth was examined, and eating habit attributes and oral health behaviors were researched. Results: Lightness(L) was significantly high in female compared to male(12, p<0.05), the more often intake of red pepper paste decreased(11, 13) lightness. and the brightness of the 31-40 age group was significantly higher(12, p<0.05) than the group under the age of 20. Red chroma(a) was significantly low in over 50 age group compared to the group under the age of 20(12, p<0.05), and the red chroma(a) of the "received periodic scaling" group was significantly lower(13, p<0.01) than the other group.

• Journal of Dental Rehabilitation and Applied Science
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• v.35 no.3
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• pp.170-179
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• 2019

The prosthodontic treatments in maxillary anterior teeth focus on achieving esthetic appearances. It is possible to improve the esthetic appearance by adjusting the shape, arrangement, and color of the maxillary anterior teeth. For anterior teeth restoration, it is necessary to evaluate the relationship of teeth, lip and gingival architecture with the facial profile of patient. Also, clinician needs to fully understand what the patient wants to. DSD (digital smile design) concept can be applied as a tool to improve communication with the clinician, technician and patient. In addition, DSD can help to meet the needs of the patient. In this case, it was impossible to achieve symmetry due to congenital missing of maxillary central incisor. The definitive treatment goal was to get the harmony of maxillary anterior teeth, lip and the patient's face. This case report describes that the patient and clinician got the satisfying esthetic outcome by using DSD.

• Journal of Korean Dental Science
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• v.14 no.1
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• pp.40-45
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• 2021

During orthodontic treatment of impacted teeth, use of appropriate anchorage against the traction force is important. Tooth anchorage with multi-bracket appliances is commonly used but sometimes it causes unwanted movements of adjacent teeth. Skeletal anchorage devices are therefore considered to minimize such side effects. Still their survival rate and positioning are highly limited according to the bone density and the interradicular space. This case report presents a case of two impacted teeth, one of which is dilacerated and horizontally angulated. Using the microplate with short screws and a bendable neck, negative effects on adjacent teeth were minimized and impacted teeth were repositioned with good stability.

• Journal of Oral Medicine and Pain
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• v.4 no.1
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• pp.22-30
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• 1979

In order to evaluate the normal eruption time of Korean permanent teeth, the uthor had examined the eruption phases of permanent central incisors in 714 malw and 581 female children aged from 4.5 to 9-year old and analysed. The eruption was divided into 3 phases; the tip of crown can be seen, the half of the crown can be easily seen, and full length of the crown can be seen. The obtained results were as follows : 1. It seemed that percentage of the erupting and erupted permanent central incisor in female by age was higher than that of male. 2. In general, percentage of the erupting and erupted lower central incisor by age was higher than that of upper first molar.

• The Journal of Korean Academy of Prosthodontics
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• v.22 no.1
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• pp.79-84
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• 1984

The stability of teeth is an important measure of the periodontal health. This study was designed to determine if there was a relation between the patterns of disclusion and a tooth mobility. An evaluation was made on 117 persons with Angle's class I occlusion who were free from histories of orthodontics, removable or fixed prosthesis, and anterior crowding or open contacts. The results were as follows: 1. In this study, 17.52% of the subjects were exhibited canine protected occlusion. 2. In protrusive movements, 75.21% of the subjects were exhibited incisor guided occlusion and the subjects of canine guided occlusion was the smallest. 3. The canine tooth of mouths having canine-protected occlusions had slightly lower mean tooth mobility scores than the canine of mouths having group function occlsion, but there was no significances. 4. The tooth mobility score of central incisor had higher than that of lateral incisor.

• Journal of the Korean Academy of Esthetic Dentistry
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• v.26 no.2
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• pp.101-114
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• 2017

Successful treatment outcome of esthetic dentistry often requires team approach including orthodontist, surgeon and restorative dentist. Clinician should consider various treatment options to restore missing teeth, especially in anterior region. In this article, interdisciplinary treatment of restoring congenitally missing lateral incisor and unrestorable molars will be presented.

• Journal of the korean academy of Pediatric Dentistry
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• v.24 no.3
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• pp.568-574
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• 1997

Inverted maxillary incisor is a state in which the maxillary incisor rotates to the upward position. The present report provides two examples of correction of inverted maxillary incisors with surgical intervention & orthodontic appliance. Through surgical exposure & direct bonding of lingual button, the central incisor were brought into proper eruption path with elastic traction. The case 1 & 2 were both treated successfully. The results showed the good position of treated teeth and satisfactory esthetics and adequate width of keratinized gingiva were achieved. Careful differential diagnosis procedure is needed in order to avoid dissatisfactory results and the treatment approaches taken in this case report provided an esthetic and functional results.

• Restorative Dentistry and Endodontics
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• v.42 no.1
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• pp.65-71
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• 2017

A revascularization procedure was shown to be the best alternative therapy for immature teeth with necrotic pulp and apical infection. A 12 year old female with a history of trauma to her upper central incisor and a sinus tract was referred for endodontic treatment. She was an active orthodontic patient and had undergone regenerative endodontic treatment for the past 2 years. Clinical examination revealed no response to sensibility, percussion, and palpation tests. The preoperative radiograph showed an open apex and apical rarefaction. The case was diagnosed as previously treated tooth with asymptomatic apical periodontitis. Regenerative endodontic retreatment was performed, and the case was followed for 3 years. Clinical, radiographic, and cone-beam computed tomography follow-up examination revealed an asymptomatic tooth, with evidence of periapical healing and root maturation.

• Journal of the korean academy of Pediatric Dentistry
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• v.33 no.1
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• pp.91-98
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• 2006

Supernumerary teeth are teeth which result from the continued budding of the enamel organ of the preceding tooth or from excessive proliferation of cells. They are most often found in the maxillary anterior region. And they can be responsible for a variey of irregularities in the primary and transitional dentition. There are two morphological types of supernumerary teeth, supplemental and rudimentary. Supplemental teeth have normal shape and size. In contrast, rudimental teeth have abnormal shape and smaller size. Supplemental supernumerary teeth are most common in permanent lateral incisor area. Its extraction must be decided more carefully with differential diagnosis between normal teeth, because it has normal shape and size. We reports 3 cases of the normal incisor shaped teeth in the maxillary anterior region. In all cases, we used the 3D Dental-CT as well as the conventional plain film such as periapical, occlusal, and panoramic radiograph. Consequently, 3B Dental-CT was valualble to figure out the exact position and morphology of supernumerary teeth, to do more conservative surgery and to reduce surgery stress and time.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.2
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• pp.253-261
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• 2009

The purpose of this study was to present new data on the timing and sequence of permanent teeth emergence and to compare these findings with the results of earlier studies. The dental examinations had been performed to E-elementary school students, who visited the Yonsei University Dental Hospital between 1998 and 2005; 1,307 boys and 1,312 girls with the age ranging from 6 to 12 years old. The followings were concluded. 1. Eruption time of the maxillary permanent teeth is as follows. It was 6.81 years in male and 6.73 years in female for the central incisor, 7.78 years in male and 7.65 years in female for the lateral incisor, 10.48 years in male and 9.92 years in female for the canine, 9.76 years in male and 9.63 years in female for the first premolar, 10.66 years in male and 10.49 years in female for the second premolar, 6.39 years in male and 6.26 years in female for the first permanent molar, and 12.13 years in male and 12.03 years in female for the second permanent molar. 2. Eruption time of the mandibular permanent teeth is as follows. The central incisor could not be determined in this study, but it is assumed to erupt before the age of 6.08. In the mandible, eruption time was 6.78 years in male and 6.65 years in female for the lateral incisor, 9.76 years in male and 9.05 years in female for the canine, 9.82 years in male and 9.59 years in female for the first premolar, 10.67 years in male and 10.52 years in female for the second premolar, 6.22 years in male and 6.12 years in female for the first permanent molar, and 11.58 years in male and 11.14 years in female for the second permanent molar. 3. The eruption sequence is as follows. In the maxilla, the first permanent molar erupted first, followed by the central incisor, the lateral incisor, the first premolar, the canine, the second premolar, and the second permanent molar. In the mandible, the central incisor erupted first, followed by the first permanent molar, the lateral incisor, the canine, the first premolar, the second premolar, and the second permanent molar. 4. Tooth eruption occurred earlier in female compared to male by average of 0.19 year in the maxilla and 0.29 year in the mandible. 5. In both male and female, the hiatus (interval of rest) occurred between the emergence of lateral incisor and first premolar in the maxilla while it was observed between the lateral incisor and canine in the mandible. Male had a hiatus of 1.98 years in the maxilla and 2.90 years in the mandible, while the female's were 1.98 years and 2.40 years, respectively.