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Effects of Different Types of Probiotics on Microbial Colonization in Saliva of Orthodontic Patients—In Vivo Study 不同类型益生菌对正畸患者唾液微生物定植的影响-体内研究
Pub Date : 2023-09-25 DOI: 10.1177/03015742231199309
Tanvi Latta
Streptococcus mutans and Lactobacillus count is found to be higher in orthodontic patients and is one of the leading causes of white spot lesion formation. Probiotics are emerging as alternative methods of plaque control. To determine the effects of different types of probiotics on S. mutans and Lactobacillus levels in saliva of orthodontic patients. A total of 140 subjects were divided into Control group (Group I) with 20 subjects and study group taking probiotics (Group II) with 120 subjects. Saliva samples were taken at baseline ( T0), after three weeks ( T1), and after six weeks ( T2). The samples were diluted and incubated on specific agar media plates. The colonies observed were expressed in colony forming units per milliliter (CFU/ml) of saliva. Group II was further subdivided into six subgroups based on probiotic intake with 20 subjects in each subgroup. Statistically significant difference was found in salivary microbial counts in all the probiotic groups ( p < 0.05). The highest reduction in count of S. mutans (653.00 ± 102.23 CFU/ml to 84.1 ± 30.48 CFU/ml) and Lactobacilli (87.35 ± 15.64 CFU/ml to 14.60 ± 8.28 CFU/ml) was seen in the lozenges group. Probiotics decrease the number of salivary S. mutans and Lactobacilli and lozenges could be considered for orthodontic fixed appliance patients.
变形链球菌和乳酸菌数量在正畸患者中较高,是白斑病变形成的主要原因之一。益生菌正在成为控制斑块的替代方法。目的与目的探讨不同类型益生菌对正畸患者唾液中变形链球菌和乳酸杆菌水平的影响。材料与方法将140例受试者分为对照组(I组)20例和服用益生菌的研究组(II组)120例。分别在基线(t1)、三周后(t1)和六周后(t2)采集唾液样本。将样品稀释并在特定的琼脂培养基上孵育。观察到的菌落以每毫升唾液的菌落形成单位(CFU/ml)表达。第二组根据益生菌摄入量进一步分为6个亚组,每个亚组20名受试者。结果各益生菌组唾液微生物计数差异有统计学意义(p <0.05)。含片组的变形链球菌数量从653.00±102.23 CFU/ml降至84.1±30.48 CFU/ml,乳酸杆菌数量从87.35±15.64 CFU/ml降至14.60±8.28 CFU/ml,降幅最大。结论正畸固定矫治器患者可考虑使用益生菌制剂降低唾液变形链球菌数量和乳酸菌及含片。
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引用次数: 0
Short-term Volumetric and Minimal Area Changes in the Pharyngeal Airway After Use of a Fixed Functional Appliance: A Three-dimensional CBCT Investigation 使用固定功能器具后咽气道短期体积和最小面积变化:三维CBCT研究
Pub Date : 2023-09-16 DOI: 10.1177/03015742231189054
Agrima Thakur, Meghna Mukhopadhyay, Shubhnita Verma, Prasad Chitra
Objective Functional appliances are used in orthodontics to bring about correction of mandibular retrognathism by forward positioning and eventually remodeling the condyle- glenoid fossa to retain this new position. Research has shown that these appliances have a significant effect on pharyngeal airway of patients. The aim of this study was to evaluate changes in volume and minimum constriction area in the pharyngeal airway using CBCT imaging after correction of mandibular retrognathism with an Advansync2 Class II corrector. Methods This single-center study consisted of 20 Class II patients (mean age 14.8 years) who required correction of mandibular retrognathism. The patients were treated with the Advansync2 Class II corrector for an average of 26 weeks. CBCT records were taken at T0 (beginning of treatment) and T1 (end of functional phase). The airway was segmented into lower nasopharynx, velopharynx and oropharynx and analyzed for changes in partial volume, total volume, and minimum area using a CBCT software [NewTom 3G TM (Newtom- Cefla S.C., Verona, Italy)]. Results The partial and total volumes were significantly larger at T1 than at T0 ( p = .003, .001). In addition, minimum area also improved in each part of the airway ( p = .005, .022, .001). Conclusion The Advansync2 fixed functional appliance can be used in Class II patients requiring improvement in their airway dimensions. However, additional long-term studies are recommended to confirm these findings.
目的在正畸治疗中应用功能矫治器对下颌后颌进行前位矫正,并最终对髁盂窝进行重塑以保持下颌后颌的新位置。研究表明,这些器具对患者咽部气道有显著的影响。本研究的目的是评估使用Advansync2 II类矫正器矫正下颌颌后缩后咽气道体积和最小收缩面积的CBCT成像变化。方法本研究纳入20例II类患者,平均年龄14.8岁,需要矫正下颌后颌。患者使用Advansync2 II类矫正器平均治疗26周。分别于T0(治疗开始)和T1(功能期结束)进行CBCT记录。将气道分割为下鼻咽部、腭咽部和口咽部,并使用CBCT软件[NewTom 3G TM (NewTom - Cefla S.C, Verona, Italy)]分析部分容积、总容积和最小面积的变化。结果T1时部分体积和总体积均显著大于T0时(p = 0.003, 0.001)。此外,气道各部位的最小面积也有所改善(p = 0.005, 0.022, 0.001)。结论Advansync2固定功能矫治器可用于需要改善气道尺寸的II类患者。然而,建议进行额外的长期研究来证实这些发现。
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引用次数: 0
Reliability of Software Prediction of Post Orthodontic Treatment Changes 正畸术后治疗变化软件预测的可靠性
Pub Date : 2023-09-13 DOI: 10.1177/03015742231188212
Swatika Sankrit, Ankur Gupta, Dhruv Krishana Tiwari, Anil K. Chandana, Preeti Bhattacharya, Ravi Bhandari, Shivani Singh
Aim The aim of this study was to assess the accuracy of Dolphin VTO prediction in patients requiring extraction treatment by comparing the VTO-predicted values and post-treatment values. Method Digital pre and post-treatment lateral cephalograms of 52 patients having Class I bimaxillary protrusion were taken and transferred in Dolphin Imaging software for analysis and VTO prediction. A composite analysis was made containing 17 dental and soft tissue parameters (Holdaway, Mc Namara, Rakosi, Steiners, and Tweed analysis). Results A comparison between post-treatment and VTO-predicted values showed that software was able to predict soft tissue changes accurately in regions such as nose, inferior sulcus depth, and chin region ( p > .05). In dental changes, software was able to predict the inclination of upper incisors to Sn and palatal plane correctly ( p > .05). Parameters for other areas such as upper and lower lip, position of upper and lower incisor show significant difference in their VTO and post-treatment values ( p < .05) showing inaccuracy of the software. Conclusion The VTO prediction of dental and soft tissue changes was significantly different from the post-treatment values for parameters such as superior sulcus depth, lower lip to h line, subnasal to h line, upper lip thickness, lip strain, nasolabial angle, interincisal angle, Ui-NA, Li-NB, and IMPA. For nasal prominence, inferior sulcus depth, chin thickness, UI-SN, and UI-PP, there was no significant difference seen. Since, for most of the parameters, a significant difference was found between the post-treatment and the predicted values, so it was inferred that the software-based VTO prediction could not be fully relied for any treatment planning.
目的本研究旨在通过比较VTO预测值和治疗后值来评估Dolphin预测拔牙患者VTO的准确性。方法对52例I类双颌前突患者进行治疗前后的数字侧位脑电图,并在Dolphin Imaging软件中进行分析和VTO预测。进行了包含17个牙齿和软组织参数的复合分析(Holdaway, Mc Namara, Rakosi, Steiners和Tweed分析)。结果术后与vto预测值的比较表明,软件能够准确预测鼻部、下沟深度、颏部等区域的软组织变化(p >. 05)。在牙齿变化中,软件能够正确预测上切牙对Sn和腭平面的倾斜度(p >. 05)。上下唇、上下切牙位置等其他部位参数的VTO及处理后值差异有统计学意义(p <.05)显示软件不准确。结论VTO预测的上沟深度、下唇至h线、鼻下至h线、上唇厚度、唇应变、鼻唇角、牙内角、Ui-NA、Li-NB、IMPA等参数与治疗后差异有统计学意义。在鼻突、下沟深度、下巴厚度、UI-SN、UI-PP方面,两组间无显著差异。由于大多数参数处理后与预测值存在显著差异,因此可以推断,对于任何治疗方案,基于软件的VTO预测都不能完全依赖。
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引用次数: 0
A Modified Retainer to Prevent Supra-Eruption of Maxillary Molars 改良固位器预防上颌磨牙上突
Pub Date : 2023-09-07 DOI: 10.1177/03015742231192791
Sanjeev Verma, Chaman Lal, R. Verma, S. Singh, Vinay Kumar
The adult patients requiring orthodontic treatment usually need adjunctive dental care for complete rehabilitation. There are so many orthodontic appliances that are used as retainer after comprehensive treatment to retain the orthodontic tooth movement achieved. The purpose of this clinical pearl is to showcase a modified acrylic retainer to prevent the supra-eruption of terminal molar whose antagonist tooth was to be replaced using dental implant after the completion of orthodontic treatment.
需要正畸治疗的成年患者通常需要辅助牙科护理才能完全康复。有很多正畸矫治器是在综合治疗后作为固位器来保持正畸牙齿达到的运动。本临床珍珠的目的是展示一种改良的丙烯酸固位器,以防止在正畸治疗完成后使用种植体替代拮抗牙的末端磨牙上突。
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引用次数: 0
En-masse Distalization of Maxillary Arch with Modified Hybrid Hyrax Appliance: A Case Report 改良Hyrax矫治器应用于上颌弓整体整复1例
Pub Date : 2023-09-06 DOI: 10.1177/03015742231189066
Mukesh Kumar, Manish Goyal, Haripriya Nongthombam, K. Shaha, Surbhi Kaushik
Class II malocclusion is one of the most commonly seen malocclusions in the orthodontic practice, with a variety of treatment modalities found in the literature. Maxillary molar distalization is a one of treatment options of dental Class II patients with excessive overjet, anterior crowding, or both. However, a commonly seen side effect in the conventional distalization devices is anchor loss. Here, in this case report, we have shown the successful treatment of a Class II malocclusion patient with a new concept of modified placement of the hybrid hyrax appliance, which was used effectively for en-masse, bodily distalization of maxillary teeth, with no anchorage loss. Also, the same appliance could be used for retention after the active distalization period till the treatment completion.
II类错牙合是正畸实践中最常见的错牙合之一,文献中有多种治疗方法。上颌磨牙远端化是牙齿II类患者过度覆盖、前牙拥挤或两者兼有的治疗选择之一。然而,在传统的远端装置中,一个常见的副作用是锚丢失。在这里,在这个病例报告中,我们展示了一个成功治疗II类错颌患者的新概念,改良混合型hyrax矫治器的放置,有效地用于上颌牙齿的整体远端,没有支抗损失。此外,同一矫治器可用于主动远端期后的保留,直至治疗完成。
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引用次数: 0
New Method to Assess Sagittal Jaw Position: TWM and TWG Angles: A Cephalometric Study 评估矢状颚位置的新方法:TWM和TWG角度:头位测量研究
Pub Date : 2023-08-24 DOI: 10.1177/03015742231188207
Anita Bishnoi, N. Kamat
The aim of the study was to develop new cephalometric angles TWM (T-Tuberculum sella, W-wing point, M-maxillary point) and TWG (T-Tuberculum sella, W-wing point, G point-center of mandibular symphysis) and to assess and evaluate the newly developed angles in determining the maxillary and mandibular sagittal position, respectively. Ninety pretreatment lateral cephalograms from the records of Department of Orthodontics and Dentofacial Orthopaedics were traced and divided equally into three groups as class I, class II, and class III based on cephalometric values of ANB angle and WITS appraisal. Further for each radiograph, angles such as SNA, TWM, SNB, and TWG were measured and recorded. The TWM angle (Maxilla) was formed using the points T-Tuberculum sella, W-wing point, M-maxillary point, and the TWG angle (mandible) was formed using the points T-Tuberculum sella, W-wing point, G point-center of mandibular symphysis. The mean values of TWM and TWG angles for the class I group were 120.1°± 3.6° and 101.4 ± 3.7°, respectively. The one-way analysis of variance (ANOVA) was used followed by Tukey post hoc testing to determine whether there was a statistically significant difference between the mean values of the three groups. A p value ≤ .05 was considered to be statistically significant. Pearson correlation test revealed a strong correlation between SNA and TWM angles and similarly between SNB and TWG angles. The two new angles, TWM for maxilla and TWG for mandible established, can be used as an alternative for assessing the sagittal position of the jaw bases and will give a clearer picture, as stable and reproducible landmarks are used.
本研究的目的是建立新的头位测量角度TWM (t-鞍结节,w翼点,m -上颌点)和TWG (t-鞍结节,w翼点,下颌联合中心G点),并评估和评价新发展的角度分别确定上颌和下颌矢状位。对正畸牙面矫形科记录的90张预处理侧位头颅片进行追踪,根据ANB角和WITS评估的头侧测量值,将其平均分为I类、II类、III类3组。此外,对于每张x线片,测量并记录SNA、TWM、SNB和TWG等角度。以鞍t结核点、w翼点、m上颌点形成TWM角(上颌骨),以鞍t结核点、w翼点、下颌联合中心G点形成TWG角(下颌骨)。第一类组TWM和TWG角度平均值分别为120.1°±3.6°和101.4±3.7°。采用单因素方差分析(ANOVA),然后进行Tukey事后检验,确定三组平均值之间是否存在统计学差异。p值≤0.05被认为具有统计学意义。Pearson相关检验显示,SNA与TWM角度之间存在很强的相关性,SNB与TWG角度之间也存在类似的相关性。这两个新的角度,即上颌的TWM和下颌骨的TWG,可以作为评估下颌基部矢状位置的替代方法,并将提供更清晰的图像,因为使用了稳定和可重复的地标。
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引用次数: 0
Evaluation of Effects of Bimaxillary Anchored Fixed Functional Appliance on Temporomandibular Joint and Maxillomandibular Complex in Late Adolescents: An MRI Study 双颌锚定固定功能矫治器对青少年晚期颞下颌关节及上下颌复合体的影响:MRI研究
Pub Date : 2023-08-13 DOI: 10.1177/03015742231187698
Anshika Gandhi, P. Rai, T. Tripathi, and Anup Kanase
To evaluate and assess changes in temporomandibular joint (TMJ), dental, skeletal and soft tissue changes following bimaxillary anchored fixed functional appliance (FFA) treatment of skeletal Class II malocclusion using Magnetic Resonance Imaging. The prospective single-arm clinical trial included 15 patients (8 males, 7 females; mean age 15.71 + 1.81years) with Class II Division 1 malocclusion treated with bimaxillary anchored Forsus FRD. Four miniplates were placed bilaterally in maxilla and mandible. Then Forsus FRD L pin module was attached to miniplates without levelling of the arches. Pre-treatment (T1) and post-functional (T2) lateral cephalograms and MRI of TMJ were recorded. A total of 7 parameters were used to assess TMJ in all the 3 planes using MRI. Student’s t-test was carried out to compare pre- and post-treatment-induced changes. The mandible significantly moved forward (SNB, 3.71 + 0.91°; SND, 3.21 + 1.25°; Pg-OLp, 2.61 + 0.66mm, p<0.001) and there was distalizing effect on maxilla (SNA, –0.79 + 0.89°; A-OLp, –0.57 + 0.47mm, <0.001). Mean overjet correction of 4.43mm was achieved, of which 71.8% were skeletal changes. 65% of skeletal changes contributed to molar relationship correction. The forward positioning of mandible seems to be because of condylar and glenoid fossa remodelling, with condyle moving in anterior position within glenoid fossa (3.28 + 2.29) and articular disc moved posteriorly relative to condylar head (2.27 + 1.62°). Significant skeletal changes and TMJ remodelling were observed with bimaxillary anchored FFA in correcting skeletal Class II malocclusion.
应用磁共振成像技术评估双上颌固定功能矫治器(FFA)治疗骨性II类错牙合后颞下颌关节(TMJ)、牙齿、骨骼和软组织的变化。该前瞻性单臂临床试验包括15名II类1区错牙合患者(8名男性,7名女性;平均年龄15.71±1.81岁),接受双上颌锚定Forsus FRD治疗。在上颌骨和下颌骨两侧放置四块微型钢板。然后Forsus FRD L引脚模块连接到微型板上,而无需调平拱。记录治疗前(T1)和功能后(T2)颞下颌关节的侧位头影和MRI。使用MRI在所有3个平面上总共使用7个参数来评估TMJ。进行Student t检验以比较治疗前和治疗后引起的变化。下颌骨明显向前移动(SNB,3.71+0.91°;SND,3.21+1.25°;Pg-OLp,2.61+0.66mm,p<0.001),对上颌骨有远中效应(SNA,-0.79+0.89°;A-OLp,-0.57+0.47mm,<0.001)。65%的骨骼变化有助于矫正磨牙关系。下颌骨的向前定位似乎是由于髁和关节窝的重塑,髁在关节窝内向前移动(3.28+2.29),关节盘相对于髁头向后移动(2.27+1.62°)。
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引用次数: 0
Applicability of IOTN Index for QualityAssessment of Orthodontic TreatmentDifficulty IOTN指数在正畸治疗困难质量评价中的适用性
Pub Date : 2023-08-11 DOI: 10.1177/03015742231184372
R. Alwakeel, D. Barakah
Evaluating the need and assessing the severity of the problem help in concluding the actual need for orthodontic treatment. Many indices had been developed over the years for this purpose, and one of the most used indices is IOTN. This study was carried out for assessment of the grade of treatment difficulty utilizing the IOTN index for patients seeking orthodontic treatment at King Abdulaziz Dental Center, in Riyadh, Saudi Arabia. Random casts and digital photos of residents’ patients were collected, and statistical analysis afterward was performed for concluding the research results. Fifty random samples were collected from seven residents who are attending King Abdulaziz Dental Center. Casts and photos were utilized for the IOTN components. The IOTN score and the incidence of each variable were calculated statistically by SPSS and Python’s libraries (Pandas, NumPy, and Matplotlib). AC and DHC categories were compared to assess the correlation by using the Chi-Square and Spearman’s correlation tests. Among 50 participants, 24% do not need or have a slight need for the treatment, 42% expresses a moderate need for the treatment, and 34% actually need the treatment in regard to esthetic component. As for the dental component, 10% do not need or have a slight need for the treatment, 26% express a moderate need for the treatment, and 64% need the treatment. Spearman’s correlation test proved a correlation ( r = 0.861) between the two components. AC and DHC comparison showed significant differences ( p < .001). IOTN index is a valid index for screening the patients’ need for orthodontic treatment. The application of IOTN index concluded that moderate to severe need for orthodontic treatment is required for patients attending King Abdulaziz Dental Center. Adapting such a simple way through applying this index by utilizing the casts, X-rays, and digital photographs can save time and effort. However, more trials are needed to evaluation of this technique’s accuracy.
评估需要和评估问题的严重程度有助于得出正畸治疗的实际需要。多年来,为此目的开发了许多指数,其中最常用的指数之一是IOTN。本研究旨在利用IOTN指数评估沙特阿拉伯利雅得国王阿卜杜勒阿齐兹牙科中心寻求正畸治疗的患者的治疗困难程度。随机收集住院病人的模型和数码照片,并进行统计分析,得出研究结果。从阿卜杜勒阿齐兹国王牙科中心的7名居民中随机抽取了50个样本。铸件和照片用于IOTN组件。使用SPSS和Python库(Pandas、NumPy、Matplotlib)统计IOTN评分和各变量的发生率。采用卡方检验和斯皮尔曼相关检验比较AC和DHC两类的相关性。在50名参与者中,24%的人不需要或有轻微的治疗需要,42%的人表示有中度的治疗需要,34%的人在审美方面确实需要治疗。在牙齿方面,10%的人不需要或有轻微的治疗需要,26%的人表示有中度的治疗需要,64%的人需要治疗。Spearman相关检验证明两成分之间存在相关性(r = 0.861)。AC与DHC比较,差异有统计学意义(p < 0.001)。IOTN指数是筛选患者正畸治疗需求的有效指标。应用IOTN指数得出结论,在King Abdulaziz Dental Center就诊的患者需要进行中度至重度正畸治疗。采用这种简单的方法,通过使用模型、x射线和数码照片来应用这个索引,可以节省时间和精力。然而,需要更多的试验来评估该技术的准确性。
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引用次数: 0
Protramax: A Novel Device for Directing Class III Orthopedic Force Protramax:一种新型的三级骨科力量指挥装置
Pub Date : 2023-07-30 DOI: 10.1177/03015742231183861
Abhiram Cherukuri, S. Reddy, B. Karunakara, M. N. Praveen
Facemask has been widely used in the successful correction of Class III malocclusion. A vast majority of the literature noted forward and a counter-clockwise rotation of the maxilla with facemask therapy. Although the counter-clockwise rotation is beneficial in the treatment of hypodivergent Class III patients, it is not advisable in high-angle Class III patients with anterior open bite. In order to minimize this undesirable side effect, the direction of protraction force at an angle of 30° downward from the plane of occlusion has been recommended. By directing the protraction force from a point 5 mm above the palatal plane and 15 mm above the occlusal plane minimized the counter-clockwise rotation of the maxilla. These attempts showed that the counter-clockwise rotation of the maxilla during protraction was unavoidable but can be reduced significantly. Hence, the angulation of the extraoral elastics applied to the facemask for maxillary protraction is extremely important to reduce the counter-clockwise rotation of the maxilla. This clinical pearl demonstrates an accurate and easy method to measure the angulation of the elastics applied to the facemask to reduce the above-mentioned side effect.
面罩已被广泛用于成功矫正III类错牙合。绝大多数文献都提到了面罩治疗对上颌骨的正向和逆时针旋转。尽管逆时针旋转在治疗III级皮下注射患者中是有益的,但在前部开放性咬合的高角度III级患者中是不可取的。为了最大限度地减少这种不良副作用,建议将牵引力的方向从咬合平面向下倾斜30°。通过从腭平面上方5mm和咬合平面上方15mm的点引导牵引力,使上颌骨的逆时针旋转最小化。这些尝试表明,在牵引过程中上颌骨的逆时针旋转是不可避免的,但可以显著减少。因此,应用于用于上颌前伸的面罩的口外弹性体的角度对于减少上颌的逆时针旋转是极其重要的。这种临床珍珠展示了一种精确而简单的方法来测量应用于面罩的弹性体的角度,以减少上述副作用。
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引用次数: 0
Insta-Jig: A Quick-fix Chairside Mini-implant Placement Guide Insta Jig:一个快速固定的Chairside迷你植入物放置指南
Pub Date : 2023-07-24 DOI: 10.1177/03015742231181503
Esha Nagpal, Nandita Mansinghani, K. Bajaj
Microimplants have changed the face of orthodontic clinical practice. One of the most important factors in a practice is reduced chairside time for the patient as well as the clinician. This article presents a short clinical tip for accurate placement of microimplant.
微型种植体已经改变了正畸临床实践的面貌。实践中最重要的因素之一是减少患者和临床医生的主持时间。这篇文章提出了一个简短的临床提示,以准确放置微型植入物。
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引用次数: 0
期刊
Journal of Indian Orthodontic Society
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