• Journal of Periodontal and Implant Science
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• 제51권3호
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• pp.147-162
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• 2021

Purpose: This systematic review and meta-analysis was conducted to assess the effects of glycine powder air-polishing (GPAP) in patients during supportive periodontal therapy (SPT) compared to hand instrumentation and ultrasonic scaling. Methods: The authors searched for randomized clinical trials in 8 electronic databases for relevant studies through November 15, 2019. The eligibility criteria were as follows: population, patients with chronic periodontitis undergoing SPT; intervention and comparison, patients treated by GPAP with a standard/nozzle type jet or mechanical instrumentation; and outcomes, bleeding on probing (BOP), patient discomfort/pain (assessed by a visual analogue scale [VAS]), probing depth (PD), gingival recession (Rec), plaque index (PI), clinical attachment level (CAL), gingival epithelium score, and subgingival bacteria count. After extracting the data and assessing the risk of bias, the authors performed the meta-analysis. Results: In total, 17 studies were included in this study. The difference of means for BOP in patients who received GPAP was lower (difference of means: -8.02%; 95% confidence interval [CI], -12.10% to -3.95%; P<0.00001; I²=10%) than that in patients treated with hand instrumentation. The results of patient discomfort/pain measured by a VAS (difference of means: -1.48, 95% CI, -1.90 to -1.06; P<0.001; I²=83%) indicated that treatment with GPAP might be less painful than ultrasonic scaling. The results of PD, Rec, PI, and CAL showed that GPAP had no advantage over hand instrumentation or ultrasonic scaling. Conclusions: The findings of this study suggest that GPAP may alleviate gingival inflammation more effectively and be less painful than traditional methods, which makes it a promising alternative for dental clinical use. With regards to PD, Rec, PI, and CAL, there was insufficient evidence to support a difference among GPAP, hand instrumentation, and ultrasonic scaling. Higher-quality studies are still needed to assess the effects of GPAP.

• Journal of Periodontal and Implant Science
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• 제38권3호
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• pp.521-528
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• 2008

Purpose: Tunneling is a periodontal surgical procedure that creates access for patient cleansing and maintenance within the furcal area of a molar tooth with severe furcation involvement. Up to date, there are few studies about a long term clinical and radiographic stability of tunneling. The purpose of this retrospective study is to evaluate the long term prognosis after tunnel preparation of molars with through and through furcation. Material and Methods: 25 teeth of 23 patients aged 36 to 70 (mean age 51.7) were treated surgically with tunnel preparation. These cases were followed for 2 to 13 years (mean 6.5years) after surgery. Patients were recalled for an evaluation which was based on a questionnaire, a clinical examination, and radiographic analysis. Clinical assessment included plaque index, caries registration, probing pocket depth, bleeding on probing, tooth mobility. Baseline and over 2-year follow-up radiographs were collected and evaluated for this study. Result: 3 teeth(12%) had been extracted and 1 tooth(4%) hemisected. Root caries was detected in 3 teeth(12%). Thus 72% of the teeth were still caries tree and in function. Clinical parameters including PI, PD, BOP, mobility showed somewhat favourable results. Radiographic furcal bone loss showed no statistically significant difference compared to interproximal crestal bone loss ($3.59{\pm}1.69%$ vs $3.42{\pm}2.95%$) when root length was used as reference. There was no correlation between root trunk length and furcal bone loss. Conclusion: Over 2 years after tunneling procedure, teeth showed a clinically and radiographically stable condition, despite of slight root caries and alveolar bone loss within clinically acceptable range. The tunnel procedure may be considered as a viable periodontal treatment option for molar teeth with severe furcation involvement in individuals following a regular maintenance program.

• Journal of Periodontal and Implant Science
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• 제29권1호
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• pp.1-14
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• 1999

Ursodeoxycholic acid(UDCA) is a hydrophilic gall bladder acid and has been used as a effective drug for liver disease related to in1munity. This drug inhibits secretions of IL-2, IL-4, and $IFN-{\gamma}$ from T-cells and production of immunoglobulin from B-cells. Also it has been reported that UDCA inhibits production of IL-1 related to the progression of periodontal disease and activation of collagenases. The purpose of the present study was to elucidate the effects of UDCA on inhibition of periodontal disease progression using clinical, microbiological and histometrical parameters. Twelve pure bred, 16 month-old-beagle dogs were used in the study. After ligature-induced periodontal diseases were formed, experimental drugs were applied twice a day and then the results of clinical, microbiological, and histometrical parameters were measured at baselie(initiation of experiment) , 4weeks and 8weeks. The gel with UDCA(concentration 0.5%, 5% 3 dogs in each) was applied to experimental group, chlorhexidine to positive control group(3dogs) and the gel without UDCA(base) to negative control group. After induction of general anesthesia, the maxillary 2nd, 3rd premolars and 1st molar and the mandibular 2nd, 3rd, 4th premolars and 1st molar were ligated in one side selected randomly and were not ligated in the opposite side. The plaque index(PI), gingival index(GI), pocket depth(PD) and gingival crevicular fluid(GCF) volum were measured clinically. The PI and GI were measured at 3 buccal points of all experimental teeth and the GCF was measured only at the 3rd premolar in the maxilla and the 4th premolar in the mandible. In the microbiological study, the samples extracted from the 3rd premolar of the maxilla and the 4th premolar of the mandible at the center of buccal surface were analyzed aerobics, anaerobics and Streptococcus colony forming units, After clinical and microbiological examination at 8weeks, the dogs were sacrificed by carotid artery perfusion. The samples were fixed and sectioned including interproximal area, and the distance from cementoenamel junction(CEJ) to alveolar crest was measured. The results were that PI, GI and PD increased until 4 weeks and decreased at 8 weeks in three groups but the differences between all the groups were not significant. The 0.5% UDCA in non-ligated group showed remarkable decrease of GCF. The experimental group applied 5% UDCA decreased the number of aerobics and anaerobics. The distance from CEJ to alveolar crest was greater in the negative control group on both ligated and non-ligated sides, but the differences were not significant stastically.

• 치위생과학회지
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• 제8권4호
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• pp.261-266
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• 2008

본 연구는 잇솔질 방법 중에 하나인 전문가 잇솔질법(Toothpick Method)을 이용하여 치주질환의 예방효과 및 환자들의 만족도를 파악하기 위하여 2008년 1월 9일부터 2월 28일까지 치주질환으로 치과의원에 내원한 환자 33명을 대상으로 전문가잇솔질법과 설문조사를 실시하였으며, SPSS WIN 12.0 프로그램을 이용하여 분석한 결과 다음과 같은 결론을 얻었다. 1. 치면세균막지수와 탐침시 출혈을 비교한 결과 치면 세균막지수에서는 최종검사를 시행한 후 초기치료직후와 비교한 결과 초기정밀검진 시 보다 0.16점으로 감소하였으며, 탐침 시 출혈은 2.96점으로 감소하여 통계적으로 유의한 차이를 보였다(p < .001). 2. 전문가잇솔질에 대한 환자만족도는 5점 만점에서 4.20으로 만족도가 높은 것으로 조사되었으며, 전반적인 프로그램 만족 항목에서 4.67로 가장 높게 조사되었으며, 치석제거와 비교 시 만족정도에서는 3.97로 가장 낮게 조사되었다. 일반적인 특성에 대한 환자만족도는 모두 통계적으로 유의한 차이는 없었다(p > 0.05). 3. 전문가 잇솔질 적용 후 성별에 따른 구강 내 자각인 지도를 살펴본 결과 '잇몸이 좋아졌다'가 남성의 경우 16.4%, 여성은 25.5%로 가장 높게 조사되었고, '출혈감소'는 남성은 14.5%, 여성은 10.9%로 나타났고, '입냄새 감소'는 남성이 10.9%, 여성이 7.3% 순으로 조사되었다. 전문가 잇솔질을 이용해 환자구강건강관리를 한 결과 치면세균막지수와 출혈율이 감소한 것으로 조사되었으며, 전문가잇솔질에 대한 환자만족도는 5점 만점에서 4.20으로 만족도가 비교적 높은 것으로 조사되었다. 위의 결과로 미루어 볼 때, 치과진료실 내에 환자의 치주건강을 유지할 수 있는 구강건강관리 인력의 요구와 교육이 필요하며 구강건강증진 프로그램 개발이 절실히 필요하다고 생각한다.