Complete analysis of space in the dental arch used in the Tweed-Merrifield technique as a key to prepare a maximally individual plan of orthodontic treatment

2017 ◽  
Vol 13 (4) ◽  
pp. 283-290
Author(s):  
Justyna Warmuz ◽  
Beata Kawala ◽  
Liwia Minch
Keyword(s):  
Orthodontic Treatment ◽  
Soft Tissues ◽  
Anterior Segment ◽  
Complete Analysis ◽  
Dental Arch ◽  
Initial Shape ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Therapeutic Outcomes ◽  
Detailed Assessment

The Tweed-Merrifield technique is based on a simple and detailed diagnosis and therapy considering a shape of the dental arch with preservation or improvement of facial features.<b> Aim</b>. The aim of the work was to present a reliable and structured method to analyse diagnostic models used in the Tweed-Merrifield technique. <b>Material and methods</b>. Based on a review of available literature the paper presents rules to assess an amount of space in the arch for tooth movements used in the Tweed-Merrifield technique. The analysis of models in this technique is based on the assessment of three segments of the dentition: anterior, middle and posterior. With regard to each segment actual width of teeth and amount of space available in the arch is measured. Additionally, in the anterior segment evaluation of alignment of lower incisors in relation to FMIA (Frankfort Mandibular Incisor Axis Angle) or IMPA (Lower Incisor Mandibular Plane Angle) cephalometric angles as well as assessment of the soft tissues thickness is important. With regard to the middle segment of the dentition measurement of the curve of the Spee plays an important role, and with regard to the posterior segment it is also necessary to evaluate expected growth in patients at the developmental age. <b>Conclusion</b>. A detailed assessment of possible tooth movements and treatment management taking into account an initial shape of the arch allow to obtain stable therapeutic outcomes. <b>(Warmuz J, Kawala B, Minch L. Complete analysis of space in the dental arch used in the TweedMerrifield technique as a key to prepare a maximally individual plan of orthodontic treatment. Orthod Forum 2017; 13: 283-90).</b>

Effects of Three Different Orthodontic Treatment Methods on the Stability of Mandibular Incisor Alignment

2017 ◽  
Vol 41 (6) ◽  
pp. 486-493 ◽  
Author(s):  
Hande Gorucu-Coskuner ◽  
Ezgi Atik ◽  
Ilken Kocadereli
Keyword(s):  
Orthodontic Treatment ◽  
Dental Arch ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Retention Period ◽  
Welch Test ◽  
The Stability ◽  
Cephalometric Measurements ◽  
Extraction Treatment ◽  
Lower Incisors

Objective: To compare the effects of extraction, non-extraction and air-rotor stripping treatments on mandibular dental arch dimensions, lower incisor positions and evaluate their effects on the stability of the treatment. Study design: The sample consisted of 44 patients with Class I malocclusion and moderate crowding including 15 patients treated with extraction, 13 with air-rotor stripping (ARS), and 16 with non-extraction treatment. The records were taken at pretreatment (T0), end of active orthodontic treatment (T1), minimum 3 years post-treatment (T2). The model and cephalometric measurements were evaluated. For statistical analyses ANOVA and Welch test was applied. Results: At post-retention period Little's irregularity indices were increased to 1.96 mm, 2.38 mm and 3.59 mm for extraction, ARS and non-extraction groups respectively (p&lt;0.05). At T1-T2, intercanine widths were decreased significantly at all groups (p&lt;0.05). The arch length and arch depth decreased significantly at extraction group (p&lt;0.05) from T0 to T1 and remained the same at T2 (p&gt;0.05). The lower incisors were retroclined with treatment and slightly proclined at post-retention period in extraction group. In ARS and non-extraction group, lower incisors proclined with treatment and remained the same at post-retention. Conclusion: At all groups the irregularity indices relapsed but did not return to pretreatment values. Although significant increase at intercanine width was only observed in non-extraction treatment, at post-retention phase, intercanine widths were significantly decreased at all groups. The changes at lower incisor inclinations relapsed slightly in extraction group but remained the same in the other groups.

scholarly journals Therapeutic Extraction of Lower Incisor for Orthodontic Treatment

2012 ◽  
Vol 13 (4) ◽  
pp. 574-577 ◽  
Author(s):  
Manish Goel ◽  
Amit Maheshwari ◽  
Dandu Sitarama Raju ◽  
AS Veereshi ◽  
D Lakshmayya Naidu ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Orthodontic Treatment ◽  
Diagnosis And Treatment ◽  
Effective Treatment Option ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Facial Esthetics ◽  
Key Factor ◽  
Size Discrepancy ◽  
Proper Diagnosis

ABSTRACT Lower incisor extraction in orthodontic treatment was very rare modality of orthodontic treatment because there are few patients who meet the standards for such treatment. Proper diagnosis and treatment planning should be done to achieve good occlusion and facial esthetics. Criteria for lower incisor extraction included degree of crowding, tooth size discrepancy, pathologic condition, vertical overbite, sagittal incisal relationship, skeletal growth pattern and age of the patient. This article comprises of a case of class I malocclusion treated with lower incisor extraction, with comprehensive analysis, diagnosis and treatment planning, treatment results were satisfactory. Clinical significance Mandibular incisor extraction can be an effective treatment option in borderline cases with mild crowding in lower arch. Minimal alteration of mandibular arch form is key factor for success and stable results. How to cite this article Raju DS, Veereshi AS, Naidu DL, Raju BHVR, Goel M, Maheshwari A. Therapeutic Extraction of Lower Incisor for Orthodontic Treatment. J Contemp Dent Pract 2012;13(4):574-577.

scholarly journals The Effect of Different Lower Third Molar Conditions on the Re-Crowding of Lower Anterior Teeth in the Absence of Tight Interproximal Contacts One-Year Post Orthodontic Treatment: A Pilot Study

2004 ◽  
Vol 5 (3) ◽  
pp. 66-73 ◽  
Author(s):  
Khalid M. Al-Balkhi
Keyword(s):  
Pilot Study ◽  
Orthodontic Treatment ◽  
Third Molar ◽  
Dental Arch ◽  
Third Molars ◽  
Lower Incisor ◽  
Exact Test ◽  
Anterior Teeth ◽  
One Year ◽  
The One

Abstract The role of lower third molars in lower incisor crowding is a debatable topic. Some believe the presence or eruption of lower third molars is associated with the crowding of mandibular incisors, others negate such association. Thirty-two newly debonded orthodontic patients, with ages ranging from 14-19 years, were randomly selected. No retainers were used for the lower dental arch. Removal of tight interproximal contacts of the lower anterior teeth was created and maintained by periodic abrasive stripping every 2-3 months, if needed. The cases were followed up for one year. Orthopantomographs (OPGs) and study casts were taken at debonding (post-treatment) and at the end of the one year follow up (post retention). Statistical analysis of the lower third molar conditions – erupted, unerupted, or missing with or without sufficient space for their eruption – versus re-crowding of lower incisors was evaluated using Fisher's Exact Test. The results of this pilot study revealed there was no significant correlation between the different conditions of the lower third molars versus lower anterior re-crowding in the absence of tight interproximal incisal contacts; however, a larger sample size is needed to verify such findings. Citation Al-Balkhi KM . The Effect of Different Lower Third Molar Conditions on the Re-Crowding of Lower Anterior Teeth in the Absence of Tight Interproximal Contacts One-Year Post Orthodontic Treatment: A Pilot Study. J Contemp Dent Pract 2004 August;(5)3:066-073.

scholarly journals INTRODUCTION TO ORTHODONTIC EDUCATION IN BULGARIA OF DIGITAL TECHNOLOGIES AND 3D ARCHIVING

2019 ◽  
Vol 31 (4) ◽  
pp. 873-877
Author(s):  
Sandra Atanasova ◽  
Sofija Carceva Salja ◽  
Ljubica Prosheva
Keyword(s):  
Orthodontic Treatment ◽  
Third Molar ◽  
Permanent Teeth ◽  
Individual Treatment ◽  
Dental Arch ◽  
Third Molars ◽  
Treatment Needs ◽  
Active Growth ◽  
Mandibular Incisor ◽  
The Third

Orthodontic treatment, especially during the period of active growth, can significantly affect the development of the jaws and teeth. Treatment with extraction of molars is more complicated because the space that needs to be closed is larger than the premolar spaces and the time of treatment will be longer. However, in cases where we have a lack of space, teeth protrusion or dental asymmetry, and the extraction of permanent teeth is indicated, the damaged molars should be the first option for extraction when premolars are in better condition. The third molars in different ways are affected by orthodontic therapy. One of them is orthodontic treatment by applying the extraction of the third molars, this situation being widely explored. Extraction of third molar for orthodontic reasons is justified when it prevents the eruption of the second molar or otherwise affects the other teeth. The indications of extraction and selection of teeth to be removed depend on the specific aspects of malocclusion. Premolars are teeth that are usually extracted from orthodontic reasons, but this is not the rule and depends on individual treatment needs. The decision to correct the malocclusion with teeth extraction should be based on the ratio of the size of the dental arch with the size of the teeth, facial appearance and other factors arising from the diagnosis itself. Indications for extraction of the third molars during orthodontic treatment are: mandibular incisor crowding, if they in some way constitute a obstruction of orthodontic treatment as well as preparation for orthognathic surgery. The success of an orthodontic treatment involving the extraction of molars is directly related to the patient complaints and psychological profile, the absence of diseases and skeletal discrepancies, the professional experience as well as the fact whether the patient underwent previous orthodontic treatment with extraction. Patients with partially or completely non-erupted teeth are significantly more likely to have certain consequences: before, during or after the orthodontic treatment. Therefore, orthodontists need to raise patient awareness of these consequences in the context of orthodontic treatment.

scholarly journals The Effect of Changes in Lower Incisor Inclination on Gingival Recession

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Gulen Kamak ◽  
Hasan Kamak ◽  
Hakan Keklik ◽  
Hakan Gurcan Gurel
Keyword(s):  
Orthodontic Treatment ◽  
Gingival Recession ◽  
Intergroup Difference ◽  
Crown Height ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Lateral Cephalograms ◽  
Tooth Number ◽  
Incisor Inclination ◽  
Plaster Models

Aim. Orthodontic treatment may promote development of recessions. The mechanism by which orthodontic treatment influences occurrence of recessions remains unclear. The aim of this study was to test the hypothesis that a change of mandibular incisor inclination promotes development of labial gingival recessions.Materials and Methods. The study sample comprised dental casts and lateral cephalograms obtained from 109 subjects before orthodontic treatment (Tb) and after orthodontic treatment (Ta). Depending on the change of lower incisor inclination during treatment, the subjects were divided into three groups: Retroclination (R), Stable Position (S), and Proclination (P). The presence of gingival recessions of mandibular incisors and clinical crown heights were assessed on plaster models.Results and Conclusions. From Tb to Ta, Inc_Incl showed a statistically significant change in the R, P, and S groups (p<0.05). Increase of clinical crown heights of the lower incisors (42, 4, and 31) was not statistically significant in any group. The only statistically significant intergroup difference was the greater increase of the clinical crown height of tooth number 32 in the P group in comparison with the R group (p=0.049). The change of lower incisor inclination during treatment did not lead to development of labial gingival recessions in the study sample.

Orthodontic management in a female patient with an impacted incisor in the mandible – case report

2018 ◽  
Vol 14 (2) ◽  
pp. 58-65
Author(s):  
Agnieszka Świątkowska ◽  
Izabella Dunin-Wilczyńska ◽  
Wojciech Świątkowski
Keyword(s):  
Case Report ◽  
Female Patient ◽  
Orthodontic Treatment ◽  
Permanent Teeth ◽  
Deciduous Teeth ◽  
Dental Arch ◽  
Severe Injuries ◽  
Impacted Tooth ◽  
Lower Incisor ◽  
The Face

Traumas to deciduous teeth, such as intrusion and complete avulsion, lead to the most severe injuries to tooth buds of permanent teeth. The most common post-traumatic complications of permanent teeth include: enamel hypoplasia or hypocalcification, crown or root dilaceration, partial or complete inhibition of root growth, and eruption disorders.<b> Aim</b>. The paper aimed to present orthodontic treatment in a female patient with an impacted permanent lower incisor with significantly impaired morphology due to a trauma to its deciduous predecessor. <b>Material</b>. Material included: patient’s orthodontic records, gypsum models, photographs and radiological records. <b>Results</b>. Orthodontic treatment was successful despite abnormal morphology of the impacted tooth 41. After 4-year follow-up the tooth remains in the arch. <b>Conclusions</b>. A tooth can be preserved in the socket when the crown-to-root ratio (CRR) is at least 1 : 1. In this case, CRR for the tooth 41 was 2 : 1, and therefore its extraction would be recommended. Despite this a decision was made to introduce an impacted tooth into the arch. Thanks to its presence in the dental arch it was possible to preserve appropriate bone quality for implantation of a prosthetic implant in the future. Prosthetic treatment (if necessary) may be performed after completion of vertical growth of the face that is observed in women after the age of 16 years. <b>Summary</b>. This case of a 15-year female patient shows that as a result of orthodontic and surgical intervention and despite significant root shortening the tooth may remain in the dental arch and play its functional and aesthetic role.<b> (Świątkowska A, Dunin-Wilczyńska I, Świątkowski W. Orthodontic management in a female patient with an impacted incisor in the mandible – case report. Orthod Forum 2018; 14: 150-7)</b>.

Management of Patient with Aggressive Periodontitis by Orthodontic and Prosthodontic Collaboration

DENTA ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 80
Author(s):  
Chaterina Diyah Nanik K ◽  
Anindita Apsari
Keyword(s):  
Orthodontic Treatment ◽  
Young Patients ◽  
Interdisciplinary Approach ◽  
Aggressive Periodontitis ◽  
Definitive Treatment ◽  
Dental Arch ◽  
Preliminary Treatment ◽  
Young Adult Patient ◽  
Anterior Teeth ◽  
Long Span Bridge

<p><strong><em>Background:</em></strong><em> One of the most common inflammation disease in the oral cavity for the past few years is the aggressive form of periodontitis. Common signs of aggressive periodontitis is the mobility of teeth especially in incisive and first molars, and occuring mostly in young patient. Young patients whose losing her anterior teeth, are a real challenge for dentist and prosthodontist. Prosthodontist need to consider both functional and esthetic aspects. <strong>Objective:</strong> Rehabilitation of young adult patient with aggressive periodontitis by an interdisciplinary approach of orthodontist and prosthodontist. <strong>Case Description:</strong> A young woman, suffered from aggressive periodontitis with major complain of her teeth mobility, especially incisive and first molar in mandible. She had undergone periodontal treatment, but the result was failed. The anterior teeth in mandible need to be extracted, therefore patient wished not to be in edentulous state. As preliminary treatment, we choose immediate denture to replace the anterior mandible teeth. We faced difficulties in mandible, because her right canine weren’t in the proper dental arch. So we asked orthodontist to place fixed orthodontics in mandible, to get the canine back in the proper arch. We’ve chosen orthodontic treatment,because we didn’t want to extract the canine teeth. We evaluated in six months and after the canine back in the proper arch, we proceed to long span bridge in mandible as our definitive treatment. <strong>Conclusion:</strong> By not extracting the canine teeth, we got some advantages, especially patient psychically was happier with her own teeth. The collaboration with another dentistry field, provides us better treatment for patient. After treatment, patient had no complaints and was happy with her new smile.</em></p><p><strong><em>Keywords:</em></strong><em>  Prosthodontic rehabilitation, aggressive periodontitis, orthodontic treatment, esthetic</em><em>.</em></p><strong><em>Correspondence:</em></strong><em> Chaterina Diyah Nanik. K; Department of Prostodontitics, Faculty of Dentistry, Hang Tuah University, Arif Rahman Hakim 150, Surabaya; Phone 031-5912191, Email: </em><a href="mailto:[email protected]"><em>[email protected]</em></a>

OPTIMIZATION OF SURGICAL-ORTHODONTIC TREATMENT TACTICS IN PATIENTS WITH IMPACTED TEETH

2019 ◽  
Vol 72 (5) ◽  
pp. 838-845
Author(s):  
Pavlo I. Tkachenko ◽  
Maryna I. Dmytrenko ◽  
Mykola O. Cholovskyi
Keyword(s):  
Orthodontic Treatment ◽  
Objective Assessment ◽  
Optimal Path ◽  
Reference Points ◽  
Permanent Teeth ◽  
Diagnostic Process ◽  
Specific Reference ◽  
Dental Arch ◽  
Impacted Tooth ◽  
Impacted Teeth

Introduction: Impacted teeth is complex anomaly of teeth eruption that requires a balanced approach not only in the differential diagnosis of its forms, but choice of rational methods of treatment. The aim: Optimization of the tactics of orthodontic-surgical treatment of patients with impacted teeth based on the development and implementation of computed tomographic indices (KT) and photometric indices (FM) of opening of surgical access (OSA) to crowns of impacted teeth Materials and methods: The results of treatment of 48 patients with delay of permanent teeth eruption have been analyzed. For an objective assessment of treatment results, a group of 24 (aged from 9 to 19 years old ) was formed. All 24 patients had typical clinical situation. Results: Orthodontic correction of patients envisaged, first of all, the elimination of obstacles in the way of teeth eruption, if necessary to provide space in dental arch and simultaneous treatment of associated bite malocclusions. Surgical exposure of impacted tooth crown was carried out and at the same time a triangular shaped guiding channel was formed, base of channel was at the impacted tooth and its angle finished into the dental arch. Precise dimensions and depth of the channel were preliminary planed on computed tomography slices with 3D reconstruction. Mean values of CT width (7,13±0,54mm), and length (6,42±0,78mm) of OSA and CT index (130,79±8,19%) of OSA to impacted teeth crowns were determined. Conclusion: To improve the quality of diagnosis and optimization of methodological approaches to treatment of patients with teeth impaction, we have proposed CT and FM OSA indices to the crowns of impacted teeth. The developed indices serve as specific reference points for optimization of diagnostic process, for reducing of probability of repeated surgical interventions and choosing the optimal path for instrumental orthodontic treatment of patients with impacted teeth

scholarly journals Dental and skeletal changes in mild to moderate Class II malocclusions treated by either a Twin-block or Xbow appliance followed by full fixed orthodontic treatment

2015 ◽  
Vol 85 (6) ◽  
pp. 997-1002 ◽  
Author(s):  
Sayeh Ehsani ◽  
Brian Nebbe ◽  
David Normando ◽  
Manuel O Lagravere ◽  
Carlos Flores-Mir
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Control Group ◽  
Block Group ◽  
Two Phase ◽  
Mandibular Incisor ◽  
Twin Block ◽  
Treatment Groups ◽  
Skeletal Changes ◽  
Length Increase

ABSTRACT Objective:  To compare the short-term skeletal and dental effects of two-phase orthodontic treatment including either a Twin-block or an XBow appliance. Materials and Methods:  This was a retrospective clinical trial of 50 consecutive Class II cases treated in a private practice with either a Twin-block (25) or XBow (25) appliance followed by full fixed orthodontic treatment. To factor out growth, an untreated Class II control group (25) was considered. Results:  A MANOVA of treatment/observation changes followed by univariate pairwise comparisons showed that the maxilla moved forward less in the treatment groups than in the control group. As for mandibular changes, the corpus length increase was larger in the Twin-block group by 3.9 mm. Dentally, mesial movement of mandibular molars was greater in both treatment groups. Although no distalization of maxillary molars was found in either treatment group, restriction of mesial movement of these teeth was seen in both treatment groups. Both treatment groups demonstrated increased mandibular incisor proclination with larger increases for the XBow group by 3.3°. The Wits value was decreased by 1.6 mm more in the Twin-block group. No sex-related differences were observed. Conclusions:  Class II correction using an XBow or Twin-block followed by fixed appliances occurs through a relatively similar combination of dental and skeletal effects. An increase in mandibular incisor inclination for the XBow group and an increased corpus length for the Twin-block group were notable exceptions. No overall treatment length differences were seen.

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