• 대한소아치과학회지
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• 제28권1호
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• pp.142-145
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• 2001

소아치과에 내원한 환아 중에서 치아의 수에 따른 이상을 많이 관찰할 수 있는데 그 중의 하나가 과잉치이다. 과잉치는 정상 치판 (dental lamina)의 과도한 증식의 결과로 발생되며 유치열에서 $0.3\sim0.8%$, 영구치열에서는 $1.0\sim3.5%$의 발생빈도를 보인다. 2 : 1로 남자에게 호발하고 9 : 1로 상악에 호발하며 구치부보다 전치부에 많이 발생한다. 가장 호발하는 것은 상악 정중 과잉치로 상악 중절치 사이에 위치하며 하악 전치부에서는 2%로 낮은 빈도를 보인다. 본 증례는 파노라마 사진 촬영 결과 하악 좌우측 유중절치의 선천적 결손과 4개의 영구 절치외에 2개의 과잉치가 전치부에 관찰되어 발치와 교정치료를 통해 양호한 결과를 얻게 되어 보고하는 바이다.

• 대한소아치과학회지
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• 제38권4호
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• pp.435-440
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• 2011

상악 견치의 매복은 소아치과 의사가 흔히 접할 수 있는 맹출장애이며, 이를 방치하였을 경우 인접치의 치근 흡수, 낭종 형성 등의 임상적인 문제점을 유발할 수 있다. 이에 대한 치료는 간단한 유치 발치에서부터 매복치아의 교정적 견인, 외과적 자가이식 등 다양한 방법을 고려할 수 있다. 이 중 자가 이식은 매복치아가 교정적 견인술을 시행하기 어려운 위치에 존재하거나 재위치 시키는데 실패했을 경우에 매복치아의 발거에 앞서 고려할 수 있으며, 그 예후는 치근의 완성도, 환자연령, 외과적 술식, 근관치료 시기, 치아고정 기간 등에 의해 결정된다. 본 두 증례들은 혼합치열기 말기에 상악 견치가 매복된 환자에서 그 매복 위치가 자발적인 맹출 유도나 교정적 견인 및 배열이 어렵다고 판단된 경우이며, 자가 이식 후 근관치료와 교정 치료를 시행하고 현재까지 성공적으로 유지되고 있어 보고하는 바이다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제36권3호
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• pp.103-110
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• 2014

Purpose: The current gold standard for clinical jawbone formation involves autogenous bone as a graft material. In addition, demineralized dentin can be an effective graft material. Although demineralized dentin readily induces heterotopic bone formation, conventional decalcification takes three to five days, so, immediate bone grafting after extraction is impossible. This study evaluated the effect of vacuum ultrasonic power on the demineralization and processing of autogenous tooth material and documented the clinical results of rapidly processed autogenous demineralized dentin (ADD) in an alveolar defects patient. Methods: The method involves the demineralization of extracted teeth with detached soft tissues and pulp in 0.6 N HCl for 90 minutes using a heat controlled vacuum-ultrasonic accelerator. The characteristics of processed teeth were evaluated by scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Bone grafting using ADD was performed for narrow ridges augmentation in the mandibular area. Results: The new processing method was completed within two hours regardless of form (powder or block). EDS and SEM uniformly demineralized autotooth biomaterial. After six months, bone remodeling was observed in augmented sites and histological examination showed that ADD particles were well united with new bone. No unusual complications were encountered. Conclusion: This study demonstrates the possibility of preparing autogenous tooth graft materials within two hours, allowing immediate one-day grafting after extraction.

• Journal of Acupuncture Research
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• 제33권2호
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• pp.211-220
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• 2016

Objectives : Facial nerve palsy is a rare but well-known complication that occurs after a tooth extraction. The paralysis follows the injection of a local anesthetic, but patients typically recover after a few hours. However, there are a number of reports of delayed paralysis, and the cause of delayed facial palsy remains uncertain. This study is the first case report detailing how Korean medicine can be used to treat facial nerve palsy following tooth extraction. This study reports our experience of a patient's favorable recovery. Methods : A 25-year-old male patient experienced acute facial palsy after four premolar teeth were extracted. He was hospitalized in the Pusan National University Korean Medical Hospital. We provided complex Korean traditional medical treatments such as acupuncture, cupping, use of a hot water steamer, and herbal medicine for 18 days. Results : Using the Yanagihara Grading Score, we found improvements in the patient's voluntary facial movement as his score increased from 22 to 34. Furthermore, his accompanying symptoms, such as dry eye and facial pain, disappeared. However, the patient reported transient pain around acupoints after the acupuncture intervention. Conclusion : Our study suggests that Korean medical treatments might be effectively used to treat facial nerve palsy after tooth extraction, although further research should be conducted due to the limited number of cases in this area.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제37권3호
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• pp.169-175
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• 2011

Background: Teeth requiring extraction before radiotherapy in head & neck cancer patients should be removed as long as possible before the initiation of radiation therapy. Conventionally, a minimum 2-week waiting primary healing period is recommended. Although the above 2-week period is ideal, it was not uncommon for the radiotherapist and cancer patient to feel an urgent need to process with radiotherapy despite the need for dental care. Therefore, alternative approaches for early radiotherapy, including conservative endodontic treatment and a 1-week waiting primary healing period after dental extraction at the time of radiotherapy, were considered and applied based on the experimental study Materials and Methods: Eighteen dogs were processed for histopathologic wound healing. The effect of the primary endodontic treatment and extraction before early radiotherapy was examined. Results: No specific complication, such as, post-extraction wound infection, radiation osteitis and osteoradionecrosis, were encountered despite the early radiotherapy. Conclusion: Based on the experimental study, a minimum 1-week waiting primary healing period for oral care before radiotherapy is suitable for the early radiotherapy in head and neck cancer patients.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제48권6호
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• pp.356-362
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• 2022

Objectives: A single-blinded randomized controlled trial was designed to compare and evaluate the effectiveness of the periotome and piezotome as aids for atraumatic extraction and its sequalae. Materials and Methods: The study sample comprised 48 teeth, equally allotted to the piezotome or periotome groups by random allocation, in participants aged 19-62 years. All samples in both groups had either complete tooth structure or intact roots without crowns and had mobility ≤grade II. Clinical parameters of operative duration, presence or absence of gingival laceration, reported operative and postoperative pain, and intake of analgesics following extraction were recorded. IBM SPSS software package version 22 was used for data entry and analysis. Results: The mean operation time was significantly (P≤0.05) longer in the piezotome group than in the periotome group. However, fewer gingival lacerations were observed with use of a piezotome than with a periotome, although no significant difference was observed. The piezotome group reported significantly (P≤0.05) higher visual analog scale (VAS) pain scores during the procedure and non-significantly higher scores thereafter until the third postoperative day. In the piezotome group, the dosage of analgesic was higher, although the periotome group had a higher percentage of participants who used analgesics postoperatively; however, these differences were not statistically significant. Conclusion: The present clinical trial favors the use of periotome over piezotome for atraumatic extraction due to shorter operating time, lower postoperative VAS pain scores, and lower dosage of analgesics despite the superior ability of the piezotome to prevent gingival laceration.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제49권4호
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• pp.192-197
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• 2023

Objectives: Surgical extraction of maxillary third molars is routine in departments devoted to oral and maxillofacial surgery. Because maxillary third molars are anatomically adjacent to the maxillary sinus, complications such as oroantral fistula and maxillary sinusitis can occur. Here we explore the factors that can cause radiographic postoperative swelling of the maxillary sinus mucosa after surgical extraction. Materials and Methods: This retrospective study reviewed the clinical records and radiographs of patients who underwent maxillary third-molar extraction. Preoperative panoramas, Waters views, and cone-beam computed tomography were performed for all patients. The patients were divided into two groups; those with and those without swelling of the sinus mucosa swelling or air-fluid level in a postoperative Waters view. We analyzed the age and sex of patients, vertical position, angulation, number of roots, and relation to the maxillary sinus between groups. Statistical analysis used logistic regression and P<0.05 was considered statistically significant. Results: A total of 91 patients with 153 maxillary third molars were enrolled in the study. Variables significantly related to swelling of the maxillary sinus mucosa after surgical extraction were the age and the distance between the palatal cementoenamel junction (CEJ) and the maxillary sinus floor (P<0.05). Results of the analysis show that the relationship between the CEJ and sinus floor was likely to affect postoperative swelling of the maxillary sinus mucosa. Conclusion: Maxillary third molars are anatomically adjacent to the maxillary sinus and require careful handling when the maxillary sinus is pneumatized to the CEJ of teeth.

• 대한치과의사협회지
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• 제53권7호
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• pp.485-499
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• 2015

Purpose: Delayed intentional replantation was introduced as a new alternative to treat the teeth with severe periodontal involvement. The purpose of this study was to elucidate the possibility of delayed intentional replantation and establish theoretical backgrounds. Materials and Methods: Studies were performed into the following two subjects; (1)Clinical evaluation of patients who underwent delayed intentional replantation using clinical and radiographic data. Severe periodontitis involved teeth were carefully extracted and proper time for delayed replantation was evaluated by analyzing inflammation markers (IL-6, TNF-${\alpha}$). (2) Theoretical studies for efficacy of delayed intentional replantation using (-)-Epigallocatechin-3-gallate (EGCG) for preservation of periodontal ligament cells on root surface by minimizing inflammation and treatment of inflammatory extraction sockets. Results: Meaningful success ratio and survival rate were found in delayed intentional replantation showing reduced bone loss and maintained bone level. Additionally, viability of EGCG applied periodontal ligament cells was much higher than control group. Also, EGCG promoted healing of inflammatory extraction sockets by inhibiting inflammatory cell proliferation. Conclusion: Within the limitations of this study, 1-2 weeks after extraction is an appropriate time to do delayed intentional replantation. Also, EGCG provides helpful effects on viability of periodontal ligament cells and periodontium.

• 구강회복응용과학지
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• 제24권1호
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• pp.1-17
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• 2008

이 연구의 목적은 고정성 보철물의 제거와 지대치의 생존율을 위한 원인을 조사하는 것이었다. 총 192개의 고정성 보철물이 조선대 치과병원에서 제거되었고 308개의 지대치가 조사되었다. 제거의 가장 빈번한 이유는 치주 문제였고(30.7%), 그 다음이 우식(29.7%), 그리고 치근단 문제(18.8%) 였다. 금속도재관에서 치주 문제는 가장 빈번한 제거의 원인이었다. 완전주조관에서는 우식이 제거의 가장 흔한 이유였다. 치근단과 치주의 문제는 각각 40대 이하와 50대 이상의 사람들에서 가장 흔한 원인이었다. 308개의 지대치 중 생활치와 실활치는 각각 135(43.8%)와 173(56.2%) 이었다. 135개의 생활치 중에서 39(28.9%)개가 발거되었고, 173개의 실활치 중에서 85(49.1%)개가 발거되었다. 고정성 보철물의 제거와 지대치의 발거를 위한 각각의 위험 요소는 최종 보철물과 지대치의 예상과 진단을 위해 더 명확히 평가되어야만 한다.

• 대한소아치과학회지
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• 제40권4호
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• pp.335-341
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• 2013

매복된 상악 견치는 제 3대구치 다음으로 호발하는 매복치아로 정확한 원인은 알려져 있지 않으나 매복된 상악 견치로 인한 다양한 합병증이 나타날 수 있다. 이소맹출하는 상악 견치는 초기의 진단을 통하여 유견치의 조기 발거와 같은 차단 교정을 시행하는 경우 가장 좋은 예후를 보일 수 있으나 초기치료를 시행하지 못한 경우에는 수술적 노출과 교정적 치료를 고려할 수 있다. 또한 이소맹출하는 치아가 말기에 발견되어서 인접치아의 심한 흡수를 보인다면, 견치가 손상된 인접 치아를 대체할 수 있다. 본 증례들은 이소맹출과 치근흡수의 조기 진단을 통하여 치료되지 못한 증례로 이소맹출하는 견치를 사용하여 상악 절치의 대체사용이 대안으로 선택되었고, 현재까지 성공적인 결과를 보인다. 복합레진으로 수복된 견치는 지속적인 관찰을 통하여서 수복물을 평가할 예정이며, 추후 교정치료와 임플란트의 식립이 계획되어있다. 본 증례는 초기 처치가 이루어지지 않은 경우에 견치를 절치로 대체 사용하여 치근 흡수된 치아의 불확실한 예후를 피하고, 시간과 비용을 절감하여 심미적 만족을 얻을 수 있는 방법에 대하여 보고하고자 한다.