scholarly journals Influence of unilateral maxillary first molar extraction treatment on second and third molar inclination in Class II subdivision patients

2015 ◽  
Vol 86 (1) ◽  
pp. 94-100 ◽  
Author(s):  
Christos Livas ◽  
Nikolaos Pandis ◽  
Johan Willem Booij ◽  
Demetrios J. Halazonetis ◽  
Christos Katsaros ◽  
...  
Keyword(s):  
Private Practice ◽  
Orthodontic Treatment ◽  
Statistical Significance ◽  
Third Molar ◽  
Class Ii ◽  
Second Molar ◽  
Inclination Angles ◽  
And Gender ◽  
Extraction Treatment ◽  
Over Time

ABSTRACT Objective:  To assess the maxillary second molar (M2) and third molar (M3) inclination following orthodontic treatment of Class II subdivision malocclusion with unilateral maxillary first molar (M1) extraction. Materials and Methods:  Panoramic radiographs of 21 Class II subdivision adolescents (eight boys, 13 girls; mean age, 12.8 years; standard deviation, 1.7 years) before treatment, after treatment with extraction of one maxillary first molar and Begg appliances and after at least 1.8 years in retention were retrospectively collected from a private practice. M2 and M3 inclination angles (M2/ITP, M2/IOP, M3/ITP, M3/IOP), constructed by intertuberosity (ITP) and interorbital planes (IOP), were calculated for the extracted and nonextracted segments. Random effects regression analysis was performed to evaluate the effect on the molar angulation of extraction, time, and gender after adjusting for baseline measurements. Results:  Time and extraction status were significant predictors for M2 angulation. M2/ITP and M2/IOP decreased by 4.04 (95% confidence interval [CI]: −6.93, 1.16; P  =  .001) and 3.67 (95% CI: −6.76, −0.58; P  =  .020) in the extraction group compared to the nonextraction group after adjusting for time and gender. The adjusted analysis showed that extraction was the only predictor for M3 angulation that reached statistical significance. M3 mesial inclination increased by 7.38° (95% CI: −11.2, −3.54; P < .001) and 7.33° (95% CI: −11.48, −3.19; P  =  .001). Conclusions:  M2 and M3 uprighting significantly improved in the extraction side after orthodontic treatment with unilateral maxillary M1 extraction. There was a significant increase in mesial tipping of maxillary second molar crowns over time.

scholarly journals Combining different treatment philosophies and techniques to reach the desired treatment goal using butterfly system-customizing orthodontic treatment

2017 ◽  
Vol 5 (1) ◽  
pp. 68
Author(s):  
Dhaval Lekhadia
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Time ◽  
Class Ii ◽  
Total Treatment Time ◽  
Initial Stage ◽  
Total Treatment ◽  
Tongue Thrust ◽  
Implant Anchorage ◽  
Extraction Treatment ◽  
Selection Of

This case report describes the orthodontic treatment of an 18-year-old male patient who presented with Straight profile; tongue thrust habit, proclined upper incisors, generalised spacing in upper and lower arches, Katz's class II premolar relation unilaterally, class II canine relation unilaterally with increased overjet and overbite. A butterfly system was used in the treatment combined with frictionless biomechanics in the initial stage of treatment followed by continuous arch mechanics in the later part of treatment. A tongued crib was used to stop the tongue thrust habit along with one elastic swallow exercise. Micro-implant anchorage was used unilaterally in the upper arch for retraction of the entire segment and correction of the unilateral class II canine and premolar relationship. To avoid a dished in profile, a non-extraction treatment was executed. Final corrections of distally tipped canines were achieved using conventional Begg’s  uprighting auxiliaries in the vertical slots of butterfly system in the finishing stage. The case was finished using bite settling elastics. Total treatment time was 1 year 2 months. Aesthetic and functional goals were achieved satisfactorily with proper selection of biomechanics.

scholarly journals Age features of the teething of wisdom at persons of military age

2018 ◽  
Vol 20 (1) ◽  
pp. 121-126
Author(s):  
N V Korovin ◽  
G A Grebnev ◽  
A K Iordanishvili
Keyword(s):  
Military Service ◽  
Orthodontic Treatment ◽  
Third Molar ◽  
Molar Tooth ◽  
Second Molar ◽  
Essential Value ◽  
Wisdom Teeth ◽  
Molar Teeth ◽  
Age Features ◽  
The Military

Pathology of an eruption of wisdom teeth is importance for a military odontology because the vast majority of the military contingents on age coincides with time of their physiological eruption (16-40 years). In work, on the basis of clinic-radial methods of a research, features of a teething of wisdom at young people of military age are studied and analyzed 3D-tomograms and orthopantomograms of 325 servicemen aged from 18 up to 27 years. During work estimated existence of wisdom teeth on top and lower jaws, extent of their eruption, existence of a retention (or dystopias) and also an adentia or loss of wisdom teeth. It was established that most often eruption of the third molar teeth of jaws at recruits occurs at the age of 23-27 years, at the same time at a series of recruits eruption of the lower wisdom teeth usually is followed by various complications, such as pericoronitis, an acute purulent periostitis of a mandible, a false «acute periodontitis» of the lower second molar tooth that becomes perceptible at mesial shift of a wisdom tooth and dense contact of its coronal part with a distal root of the second molar tooth. The essential value for a full-fledged teething of wisdom has their situation in an alveolar process (part) of a jaw, and further - in dentition. It in many respects defines a clinical picture of the shown eruption complications and also tactics of stomatologic treatment - orthodontic treatment, surgical treatment or their combinations. The infectious and inflammatory complications bound to the complicated their eruption (85,93% of cases) served as the reasons of an exodontia of wisdom. In 14,07% of cases wisdom teeth on both jaws were extracted in a planned order in connection with the forthcoming orthodontic treatment on elimination of dentoalveolar anomalies. Thus, terms and features of a teething of wisdom at recruits need to be considered in clinical practice of a military odontology as their military service can pass in specific living conditions and activity of troops and health service, and at complications of a teething of wisdom the acute stomatologic surgical management, including stationary is in most cases necessary.

scholarly journals Is there a relationship between mandibular cortical bone thickness and orthodontic treatment time?

2020 ◽  
Vol 90 (6) ◽  
pp. 794-800
Author(s):  
Melissa Landin-Ramos ◽  
Sumit Yadav ◽  
Vaibhav Gandhi ◽  
Madhur Upadhyay ◽  
Aditya Tadinada
Keyword(s):  
Cortical Thickness ◽  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Class Ii ◽  
Class Iii ◽  
Bone Thickness ◽  
Angle Class Ii ◽  
Inferior Border ◽  
Extraction Treatment

ABSTRACT Objectives To determine whether there was a correlation between patients' bone thickness and time spent in orthodontic treatment. The secondary aim was to study the influence of Angle classification, extraction treatment, and age on overall treatment duration. Materials and Methods In this retrospective study, records of 971 orthodontic patients from two centers were reviewed and 500 subjects were included after imposing inclusion/exclusion criteria. The Mental Index was used to determine patients' bone density. For the Mental Index, a line perpendicular to the inferior border of the mandible was drawn on a panoramic radiograph so that it intersected the inferior border of the mental foramen. The mandibular cortical thickness was measured along this line. Two-sample t-test or a chi-square test, followed by multiple linear regression, were used to identify the factors affecting treatment duration. Results Mandibular cortical thickness was negatively associated with treatment time for all subjects (P < .05). After adjusting for covariables, it remained significant for center-1, but non-significant for center-2 subjects. Angle Class II and Class III malocclusion, extraction therapy, and age had significant positive correlations with treatment duration (P < .05). Conclusions There is a negative correlation between the mandibular cortical thickness and orthodontic treatment duration. An extraction treatment plan and treatment of Angle Class II and Class III malocclusions significantly increase the duration of orthodontic treatment. Additionally, patients over 12 years of age have shorter treatment times compared to patients under 12 years of age.

Evaluation of Mandibular Third Molar Region in a Turkish Population Using Cone-Beam Computed Tomography

2020 ◽  
Vol 16 (9) ◽  
pp. 1105-1110
Author(s):  
Büyük Kaan Orhan ◽  
Dilek Yılmaz ◽  
Mehmet Ozgur Ozemre ◽  
Kıvanç Kamburoğlu ◽  
Orhan Gulen ◽  
...  
Keyword(s):  
Statistical Significance ◽  
Third Molar ◽  
Mandibular Canal ◽  
Third Molars ◽  
Second Molar ◽  
The Third ◽  
Impacted Mandibular Third Molar ◽  
Mandibular Third Molar ◽  
The Relationship ◽  
Molar Region

Objectives: To evaluate impacted mandibular third molar tooth region and obtain linear measurements using CBCT images and to assess the relationship between the impacted third molar and the mandibular canal. Methods: CBCT scans of 351 patients (208 females, 143 males) were assessed. Age, gender, and impaction site were recorded for each patient. The relationship of third molars with the vertical axis of second molars, 2nd molar resorption and the relationship between third molar apices and the mandibular canal were assessed. In addition, the distance between ramus and second molar, mesiodistal width of the third molar, the angle between third molar and second molar, and width of the third molar capsule were measured. Binary Logistic Regression, Chi-Square Test, and General Linear Model were used for statistical analysis. Results: The highest percentage of impaction was found for mesioangular followed by transversal and vertical. The transversal impacted third molars revealed a significant association with adjacent second molar root resorption (p<0.001). There was a statistical significance between the second molar resorption and distance between ramus and second molar (p<0.001). The mesioangular impacted third molars revealed significant relation with the mandibular canal (p<0.05). The most frequent variation found was the dental canal followed by the retromolar canal. In general, higher measurement values were obtained for men when compared to women (p<0.05). Conclusion: CBCT assessment of the third molar region provided useful information regarding impacted mandibular third molar surgery operations.

Impact of Mesioangular Mandibular Impacted 3rd Molar on Peridontal Health of Adjacent Tooth

2021 ◽  
Vol 15 (11) ◽  
pp. 3488-3491
Author(s):  
Samar Nazir ◽  
Nousheen Khan ◽  
Athar Khan ◽  
Asif Noor ◽  
Naima Jabeen
Keyword(s):  
Statistical Significance ◽  
Maxillofacial Surgery ◽  
Third Molar ◽  
Root Caries ◽  
Second Molar ◽  
Impacted Mandibular Third Molar ◽  
Adjacent Tooth ◽  
Mandibular Third Molar ◽  
The Creation ◽  
The Impact

Objective: The aim of this study is to determine the impact of mesioangular mandibular 3rd molar impaction on periodontal health of adjacent tooth in patients. Study Design: Retrospective/observational study Place and Duration: Department of Oral & Maxillofacial Surgery, MMDC Multan, during from Oct 2020 to September 2021. Methods: Total of seventy patients of both genders was presented in this study. Detailed demographic data of enrolled cases age, sex, body mass index, symptoms and complications were recorded after taking informed written consent. All the patients had mesioangular impactions of mandibular third molars. The impaction depth, relationship with ramus, and angulation of 70 IMTMs and their association with 2nd molar distal caries and root resorption, pathological states, and closeness to the mandibular canal were assessed on panoramic radiographs. Pell and Gregory classification was used to determine position of impacted third molar. The odds ratio (OR) and 95% confidence interval (CI) of IMTM's position on the related complications (credible interval for Bayesian models). Statistical significance was defined as a two-tailed p-value 0.05. SPSS 24.0 version was used to analyze complete data. Results: There were 42 (60%) males and 28 (40%) females with mean BMI 23.13±6.46 kg/m2. Most of patients 31 (44.3%) were aged between 20-35 years. Mean attachment level was 3.03±2.34 and probing depth was 3.34±3.35. Caries, pain and swelling were the most common symptoms found among cases. Distal second molar root caries 21 (30%) and pocket formation 17(24.3%) were the most common pathologies. As per histological findings periapical inflammation was majority found in 37 (52.9%) cases followed by dental follicle in 19 (27.1%) and cyst in 11 (15.7%). Conclusion: In this study, we found that the impacted mandibular third molar was most linked with distal second molar root caries and the creation of a pocket between the impacted tooth and the second molar tooth. The most common pathology associated with the impacted molar was distal second molar root caries and the creation of a pocket between the affected tooth and the second molar. Keywords: Mesioangular, Impacted mandibular third molar, Pathology, Complication

scholarly journals Preoperative visualization of the lingual nerve by 3D double-echo steady-state MRI in surgical third molar extraction treatment

2021 ◽  
Author(s):  
Adib Al-Haj Husain ◽  
Silvio Valdec ◽  
Bernd Stadlinger ◽  
Martin Rücker ◽  
Marco Piccirelli ◽  
...  
Keyword(s):  
Steady State ◽  
Intraclass Correlation ◽  
Third Molar ◽  
Lingual Nerve ◽  
Point Scale ◽  
Surgical Interventions ◽  
Second Molar ◽  
Third Molar Extraction ◽  
Clinical Scenarios ◽  
Extraction Treatment

Abstract Objectives To assess the lingual nerve (LN) visualization using a 3D double-echo steady-state MRI sequence (3D-DESS). Materials and methods Three readers prospectively evaluated the LN for its continuous visibility in 3D-DESS MRI in 19 patients with an indication for removal of mandibular impacted third molars, using a 5-point scale (4 = excellent to 0 = none). Six LN anatomical intermediate points (IP) were selected and checked for their detectability by a 4-point scale (4 = yes to1 = no). Inter- and intra-rater agreement was evaluated using intraclass correlation coefficient and percentage of agreement. Results The average nerve continuity score was 3.3 ± 0.46. In 35% of the cases, the entire course was continuously visible. In 10%, the proximal and 60%, the distal part of the nerve was not continuously visible. Inter- and intra-reader agreement was good (ICC = 0.76, ICC = 0.75). The average detectability score of all IP was 3.7 ± 0.41. From IP1 to IP5, the detectability was excellent; meanwhile, IP6 had lower visibility. The inter- and intra-reader percentage of agreement was 77% and 87%. Conclusions The 3D-DESS sequence allowed accurate and continuous visualization of the LN with high reproducibility in more than one-third of the patients. This could improve the preoperative clarification of the LN position and thereby reduce complications during dentoalveolar surgical interventions. Clinical relevance 3D-DESS MRI might be beneficial in clinical scenarios where the second molar is elongated or presents a difficult rotational position while simultaneously having a close positional relationship to the third molar. Thereby, osteotomy performed more lingually, indicating extended lingual flap detachment may increase the risk of LN damage.

scholarly journals The association between orthodontic treatment with removal of premolars and the angulation of developing mandibular third molars over time

2012 ◽  
Vol 83 (3) ◽  
pp. 376-380 ◽  
Author(s):  
Bradly Russell ◽  
Mark Skvara ◽  
Eric Draper ◽  
William R. Proffit ◽  
Ceib Philips ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Plan ◽  
Third Molar ◽  
Linear Mixed Effect Model ◽  
Vertical Position ◽  
Third Molars ◽  
Mixed Effect ◽  
Mandibular Third Molar ◽  
Mandibular Third Molars ◽  
Over Time

ABSTRACT Objective: To assess changes in mandibular third molar angulation during orthodontic treatment in subjects having either first or second premolars or neither removed. Materials and Methods: In a retrospective study approved by the institutional review board, right and left mandibular third molar angulations were compared to the vertical axis of adjacent second molars before and at the end of orthodontic treatment. The sample included 25 subjects with first premolars removed, 25 subjects with second premolars removed, and 24 subjects with no premolars removed. A decrease in angulation over time of at least 5°, so that the third molar became more vertical, was considered clinically favorable. Data were assessed by a linear mixed effect model and a proportional odds model with significance set at P &lt; .05. Results: Prior to treatment, the average mandibular third molar angulation did not differ significantly among the three study groups (P  =  .97). The average change during treatment was not significantly affected by group (P  =  .59), but a higher proportion of mandibular third molars were more vertical by at least 5° in the second premolar extraction group compared to the other two groups at the completion of treatment. Conclusion: Although creating space for third molars to erupt and function has intuitive appeal, clinicians should not assume that third molars will move upright to a vertical position even if premolar removal is performed as part of an orthodontic treatment plan.

scholarly journals A MODERN APPROACH TO THE TREATMENT OF PATIENTS WITH CLASS II DISTAL OCCLUSION OF THE 1ST SUBCLASS BY ENGLE

2019 ◽  
Vol 19 (1-2) ◽  
pp. 115-121
Author(s):  
A. A Dikova
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
The Body ◽  
Modern Approach ◽  
Second Molar ◽  
Additional Equipment ◽  
Dental Diseases ◽  
Upper Jaw ◽  
Distal Occlusion

Distal occlusion is a widespread dental anomaly among all dental diseases. Protrusion of the upper jaw incisors during distal occlusion is quite common. Orthodontic treatment is characterized by its high duration. In this regard, the issue of creating methods to reduce the time of orthodontic treatment of patients with distal occlusion Class II Engle subclass 1 and improve the quality of life of the patient is relevant. When treating patients with distal occlusion, it is necessary to create conditions for the distalization of the second molars of the upper jaw; therefore, it becomes necessary to use additional equipment at the initial stages of the active period of orthodontic treatment. The devices developed by the author allow the body to distalize the second molar of the upper jaw and stabilize its position in the process of orthodontic treatment.

scholarly journals Frequency of orthodontic extraction

2016 ◽  
Vol 21 (1) ◽  
pp. 54-59 ◽  
Author(s):  
Camila de S. Dardengo ◽  
Luciana Q. P. Fernandes ◽  
Jonas Capelli Júnior
Keyword(s):  
Rio De Janeiro ◽  
Orthodontic Treatment ◽  
Tooth Extraction ◽  
Class Ii ◽  
Class I ◽  
Dental Extraction ◽  
Chi Square ◽  
Chi Square Test ◽  
Clinical Records ◽  
Extraction Treatment

Introduction: The option of dental extraction for orthodontic purposes has been debated for more than 100 years, including periods when it was widely used in treatment, including the present, during which other methods are used to avoid dental extractions. The objective was to analyze the frequency of tooth extraction treatment performed between 1980 and 2011 at the Orthodontic Clinic of Universidade Estadual do Rio de Janeiro (UERJ). Material and Methods: The clinical records of 1484 patients undergoing orthodontic treatment were evaluated. The frequency of extractions was evaluated with regard to sex, Angle's classification, the different combinations of extractions and the period when orthodontic treatment began. Chi-square test was used to determine correlations between variables, while the chi-square test for trends was used to assess the frequency of extractions over the years. Results: There was a reduction of approximately 20% in the frequency of cases treated with tooth extraction over the last 32 years. The most frequently extracted teeth were first premolars. Patients with Class I malocclusion showed fewer extractions, while Class II patients underwent a higher number of extraction treatment. There were no statistically significant differences with regard to sex. Conclusion: New features introduced into the orthodontic clinic and new esthetic concepts contributed to reducing the number of cases treated with dental extractions. However, dental extractions for orthodontic purposes are still well indicated in certain cases.

scholarly journals The Incidence and Nature of Malpractice Claims against Dentists for Orthodontic Treatment with Periodontal Damage in Israel during the Years 2005–2018—A Descriptive Study

2020 ◽  
Vol 17 (23) ◽  
pp. 8785
Author(s):  
Amir Laviv ◽  
Eitan Barnea ◽  
Nirit Tagger Green ◽  
Rana Kadry ◽  
Dima Nassar ◽  
...  
Keyword(s):  
Professional Practice ◽  
Private Practice ◽  
Older Patients ◽  
Orthodontic Treatment ◽  
Statistical Significance ◽  
Demographic Data ◽  
Descriptive Study ◽  
Legal Decisions ◽  
Periodontal Status ◽  
Malpractice Claims

In recent years, dental malpractice claims have increased dramatically worldwide. The purpose of the present study is to analyze claims related to orthodontic treatment involving periodontal problems that resulted in legal decisions in Israel. This study analyzed legal claims registered by Medical Consultants International (MCI) between 2005 and 2018. Only closed cases of orthodontic claims involving periodontal problems in which a decision was made were included. The parameters studied included patients’ demographic data, the main reasons of the claim, and complications. Statistical significance was found for aesthetic damage, which was more common in claims of females (p = 0.035) and in older claims (p = 0.004); tooth damage was more common in claims of older patients (p = 0.032); violation of autonomy was higher in private practice (p = 0.047) and in more recent claims (p = 0.001). As orthodontic treatment is becoming more popular in older patients, and as lawsuit claims become more common in recent years, the orthodontists should always analyze and document the periodontal status of their patients before and during treatment in order to maintain professional practice and avoid future claims.

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