scholarly journals The esthetic profile preferences of Class II malocclusion patients treated with extraction or non-extraction

2018 ◽  
Vol 20 (3) ◽  
pp. 179
Author(s):  
Victor De Miranda Ladewig ◽  
Milena Fabri Sanches Trecenti ◽  
Renata Rodrigues Almeida Pedrin ◽  
Marcio Rodrigues Almeida ◽  
Ana Claudia de Castro Ferreira Conti
Keyword(s):  
Negative Impact ◽  
Class Ii ◽  
Post Treatment ◽  
Class Ii Malocclusion ◽  
Treatment Protocols ◽  
Facial Profile ◽  
Class Ii Treatment ◽  
Before And After ◽  
Pre Treatment ◽  
The Impact

Abstract The treatment of Class II can have a positive or a negative impact on the facial profile aesthetic. The present study aims to evaluate the impact of two methods of orthodontic treatment of Class II malocclusion on the facial profile aesthetics. The facial profiles of 46 patients with Class II malocclusion were outlined by radiography before and after treatment; 23 of the patients were treated by the extraction of two maxillary first premolars (EXT group), and the other 23, with the Thurow Appliance (TA group), followed by braces. The profile silhouettes were filled in using the Corel Draw program. An album containing the patient’s silhouettes of both groups was created randomly, with two profiles of a patient per page. The preferences of 30 orthodontists, 30 dentists, and 30 laypersons in relation to the profile were recorded along with their perceived differences between the pre-treatment and post-treatment profiles, according to the visual analog scale. All groups of evaluators preferred the post-treatment profile more frequently. There were statistically significant differences in the evaluators’ preferences only between the orthodontists’ and the laypersons’ groups. None of the evaluators’ groups indicated substantial differences between the pre-treatment and post-treatment profiles. It may be concluded that both Class II treatment protocols, i.e., the double-extraction of the first premolars and the use of TA, improved the patients’ facial profile aesthetics.Keywords: Face. Malocclusion, Angle Class II. Tooth Extraction.Resumo As modalidades de tratamentos da Classe II tem um impacto sobre a estética da face que pode ser positivo ou negativo. O objetivo deste estudo foi avaliar o impacto da estética do perfil facial decorrente de dois tipos de tratamento para a Classe II. Foram traçados os perfis faciais das telerradiografias pré e pós-tratamento de 46 pacientes Classe II, sendo 23 de um grupo tratado com extração de dois primeiros pré-molares superiores e 23 de um grupo tratado com AEB Conjugado seguido de aparelho fixo, e estes traçados foram preenchidos com o programa Corel Draw. Foi montado um álbum com as silhuetas dos pacientes (AEB e EXO) de forma aleatória, sendo dois perfis em cada folha do mesmo paciente. Foi pedido para 30 ortodontistas, 30 cirurgiões-dentistas e 30 leigos para verificarem a sua preferência em relação ao perfil e a quantidade de diferença entre os perfis pré e pós-tratamento, de acordo com a escala analógica visual. Os 3 grupos de avaliadores preferiram o perfil pós-tratamento com maior frequência. Houve diferenças estatisticamente significantes somente entre os grupos de avaliadores ortodontistas e leigos; os 3 grupos de avaliadores indicaram que os perfis pré e pós-tratamento, não diferiram substancialmente. Pode-se concluir que o tratamento da Classe II, com extração de dois primeiros pré-molares, e com o uso do aparelho AEB Conjugado produziu um impacto positivo na estética do perfil.Palavras-chave: Face. Má Oclusão de Angle Classe II. Extração Dentária. 

scholarly journals Assessment of facial profile changes in patients treated with maxillary premolar extractions

2012 ◽  
Vol 17 (5) ◽  
pp. 131-137 ◽  
Author(s):  
Renata Rodrigues de Almeida-Pedrin ◽  
Luciane Brigueli Marrone Guimarães ◽  
Marcio Rodrigues de Almeida ◽  
Renato Rodrigues de Almeida ◽  
Fernando Pedrin Carvalho Ferreira
Keyword(s):  
Class Ii ◽  
Post Treatment ◽  
Facial Profile ◽  
Lay People ◽  
Division 1 ◽  
Before And After ◽  
Profile Changes ◽  
Pre Treatment ◽  
Positive Effect ◽  
Class Ii Division 1

OBJECTIVE: Evaluate the facial profile changes of orthodontic treatment with extraction of two upper first premolars, from the perspective of orthodontists, dentists and lay people. METHODS: Facial profiles of radiographs taken before and after treatment of 70 patients with Class II, division 1 malocclusion were traced. The silhouettes of the 70 patients were randomly assembled in an album with, being two profiles on each sheet of the same patient. Then, 30 orthodontists, 30 dentists and 30 lay people chose the more esthetic facial profile (A or B), and the amount of change they perceived between the two profiles before and after treatment, according to a visual analog scale (VAS). RESULTS: The results revealed that 83 examiners preferred the post-treatment profiles, and only three dentists and four lay people chose the profiles pre-treatment more frequently. Thus, the orthodontists often chose the profiles after treatment, followed by dentists, with no statistically significant differences found between dentists and lay people. There were significant differences within groups in the preference of pre- and post-treatment profile. Furthermore, the three groups of evaluators indicated that pre and post-treatment profiles did not differ substantially. CONCLUSIONS: The treatment of Class II, division 1 malocclusion with extraction of two first premolars has a positive effect on facial profile esthetics.

scholarly journals The Impact of Orthodontic Treatment on Pre-Existing Gingival Recessions: A Retrospective Study

2021 ◽  
Vol 11 (19) ◽  
pp. 9036
Author(s):  
Guostė Antanavičienė ◽  
Eglė Zasčiurinskienė ◽  
Dalia Smailienė ◽  
Nomeda Basevičienė
Keyword(s):  
Retrospective Study ◽  
Orthodontic Treatment ◽  
Negative Impact ◽  
Open Bite ◽  
Class Iii ◽  
Before And After ◽  
Pre Treatment ◽  
Mandibular Teeth ◽  
The Impact ◽  
Plaster Models

(1) Background: This retrospective study aimed to examine the change of gingival recessions (GR) before and after orthodontic treatment (OT). (2) Methods: Patients who had at least one GR on the vestibular surface of maxillary/mandibular teeth mesial to first molars were included. GR was measured on good quality plaster models before and after OT. (3) Results: Significant improvement of mean GR at patient level was found between T0 and T1 (0.45 mm, 95% CI: 0.28, 0.62) (p < 0.001). In 51.4% of patients GRs became better, in 37.8% GRs did not change. and in 10.8% GRs became worse. At tooth level the mean GR improvement was 0.54 mm (CI: 0.42, 0.65; median 0.55 mm Q1; Q3: 0.12, 0.96) (p < 0.001). GR improved in 67 teeth (58.7%), did not change in 41 (36.0%), and worsened in 6 (5.3%). Full healing was observed in 15 teeth. A reduced GR improvement was found in cases with pre-treatment open bite (OR 3.89; CI: 1.35, 11.16; p = 0.008) and dental Class III patients (OR 2.6; CI: 1.11, 6.0; p = 0.026). (4) Conclusion: There was an improvement of GR after OT in more than half of the patients. Class III malocclusion and reduced pre-treatment overbite had a negative impact on GR improvement.

scholarly journals Anteroposterior and Vertical Changes in Skeletal Class II Patients Treated With Modified Thurow Appliance

2014 ◽  
Vol 25 (2) ◽  
pp. 170-174 ◽  
Author(s):  
Matheus Melo Pithon ◽  
Rogério Lacerda dos Santos ◽  
Gêisa Aiane de Morais Sampaio ◽  
Izaura Helena Chaves de Meneses ◽  
Raildo Silva Coqueiro
Keyword(s):  
Class Ii ◽  
Post Treatment ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Angular Measurements ◽  
Cervical Traction ◽  
Vertical Changes ◽  
Pre Treatment ◽  
Post Hoc

The aim of this study was to evaluate the post-treatment anteroposterior and vertical alterations in skeletal Class II malocclusion with different maxillary patterns in patients treated with modified Thurow appliance. Forty-five patients (22 girls and 23 boys) with skeletal Class II and angle SN.GoGn ≤ 35 and different maxillary patterns (n=15), as follows: retrusive (SNA<80°), normal (SNA=80°- 84°) or protrusive (SNA>84°) maxilla; mean age 9 years at pre-treatment (T1) and 9 years and 10 months at post-treatment (T2), were treated with modified Thurow cervical traction appliance, with expander screw and extraoral face bow with 10° to 20° fold in relation to the intraoral arch. Force of 500 gf was applied and use for 12 to 14 h/day, with fortnightly adjustments. Analysis of variance ANOVA followed by post-hoc Tukey and Kruskal-Wallis test, followed by Mann-Whitney were used (α=5%). In changes obtained from stage T1 to T2, no statistically significant differences were found among the groups Protrusive, normal and retrusive maxilla for the variables SNB, SN.GoGn, 1.NA, overjet, overbite and Class II discrepancy (right and left) (p>0.05). Angular measurements SNA and ANB in the protrusive maxilla group were significantly greater than in the normal and retrusive maxilla groups (p<0.01). However, in the normal maxilla group these values did not differ significantly from those of the retrusive maxilla group (p>0.05). Within the limits of this study, it may be concluded that the modified Thurow cervical traction appliance was efficient for the correction of skeletal Class II irrespective of the maxillary pattern. The mandible had no significant rotation during treatment.

scholarly journals Cephalometric effects of the use of 10-hour Force Theory for Class II treatment

2012 ◽  
Vol 17 (6) ◽  
pp. 31-40
Author(s):  
Marise de Castro Cabrera ◽  
Carlos Alberto Gregório Cabrera ◽  
Karina Maria Salvatore de Freitas ◽  
Marcos Roberto de Freitas ◽  
Guilherme Janson ◽  
...  
Keyword(s):  
Treatment Time ◽  
Class Ii ◽  
Effective Length ◽  
Class Ii Malocclusion ◽  
Class Ii Treatment ◽  
Final Treatment ◽  
Mandibular Molar ◽  
Lateral Cephalograms ◽  
Significant Correction ◽  
Pre Treatment

OBJECTIVE: This study aimed to evaluate the cephalometric effects promoted by the orthodontic treatment of Class II malocclusion patients with the use of the 10-Hour Force Theory, that consists in the use of fixed appliances with 8 hours a day using a cervical headgear appliance and 16 hours a day using Class II elastics, 8 hours on the first mandibular molar and 8 hours in the second mandibular molar. METHODS: Sample comprised 31 patients with mean initial age of 14.90 years, final mean age of 17.25 years and mean treatment time of 2.35 years. The lateral cephalograms in pre-treatment and post-treatment stages were evaluated. Evaluation of cephalometric changes between initial and final treatment phases was performed by paired t test. RESULTS: The cases treated with the 10-Hour Force Theory presented a slight restriction of anterior displacement of the maxilla, increase in the effective length of the mandible, significant improvement of the maxillomandibular relationship, significant increase in anterior lower face height, distal tipping of the maxillary premolar crowns, extrusion and distal tipping of the roots of maxillary molars, significant proclination and protrusion of mandibular incisors, significant extrusion and mesialization of mandibular molars, besides a significant correction of the molar relationship, overjet and overbite. CONCLUSION: The use of the 10-Hour Force Theory in treatment of Class II malocclusion provided satisfactory results.

scholarly journals Perubahan harmoni wajah pasca perawatan kelas II skeletal dengan pencabutan dua premolar satu atas menurut analisis Arnett dan BergmanChanges in facial harmony after skeletal class II treatment with extraction of two maxillary first premolars based on Arnett and Bergman analysis

2021 ◽  
Vol 5 (1) ◽  
pp. 43
Author(s):  
Muslim Yusuf ◽  
Nurhayati Harahap ◽  
Dhita Kartika Nasution
Keyword(s):  
Soft Tissue ◽  
Orthodontic Treatment ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Purposive Sampling ◽  
Skeletal Class ◽  
Class Ii Treatment ◽  
Skeletal Class Ii ◽  
Before And After ◽  
Facial Harmony

Pendahuluan: Arnett dan Bergman (1999) membuktikan bahwa perawatan ortodonti, analisis jaringan lunak wajah, diagnosis dan rencana perawatan memiliki parameter nilai harmoni sebagai kunci penetapan estetika wajah. Perawatan maloklusi klas II skeletal disertai proganotisme maksilaris umumnya dilakukan dengan pencabutan dua premolar satu atas untuk mengkoreksi profil wajah pasien. Tujuan penelitian untuk menganalisis perubahan nilai harmoni wajah pasca perawatan maloklusi kelas II dengan pencabutan premolar satu atas menurut analisa Arnett dan Bergman. Metode: Jenis penelitian analitik observasional dengan teknik pengambilan sampel purposive sampling. Sampel penelitian 72 foto sefalometri lateral maloklusi kelas II skeletal sebelum dan setelah perawatan ortodonti. Penilaian harmoni jaringan lunak dibagi menjadi 4, yaitu harmoni intramandibular, harmoni antar rahang, orbita ke rahang dan keseimbangan wajah. Data menggunakan Shapiro Wilk menunjukkan tidak berdistribusi normal. Uji yang digunakan Shapiro Wilk dan  analisis Spearman. Hasil: Terdapat perubahan harmoni intramandibular dan keseimbangan wajah pada maloklusi kelas II skeletal dengan pencabutan premolar satu atas sebelum dan setelah perawatan (p=0,025;p=0,032). Tidak terdapat perubahan nilai harmoni antar rahang dan orbita ke rahang pada maloklusi kelas II skeletal dengan pencabutan premolar satu atas sebelum dan setelah perawatan. Ada pengaruh besar retraksi gigi insisivus terhadap nilai harmoni wajah sebelum dan setelah perawatan pada perawatan kelas II dengan pencabutan dua premolar atas (p= 0.001). Simpulan: Perawatan maloklusi kelas II skeletal dengan pencabutan dua premolar satu atas  memiliki hubungan antara besar retraksi dengan perubahan nilai harmoni wajah berdasarkan analisa Arnett dan Bergmann. Kata kunci: Maloklusi kelas II skeletal, pencabutan dua premolar pertama atas, nilai harmoni wajah. ABSTRACT Introduction: Arnett and Bergman (1999) have proved that orthodontic treatment, facial soft tissue analysis, diagnosis, and treatment plan have parameters of harmony values as the key to determining facial aesthetics. Treatment of skeletal class II malocclusion with maxillary prognathism is generally performed by extracting two maxillary first premolars to correct the patient’s facial profile. This study was aimed to analyse changes in the facial harmony values after class II malocclusion treatment with the extraction of the maxillary first premolar following Arnett and Bergman’s analysis. Methods: This research was observational analytic with a purposive sampling technique. The study sample was 72 images of skeletal class II malocclusion lateral cephalometry before and after orthodontic treatment. Assessment of soft tissue harmony was divided into four, namely intramandibular harmony, intermaxillary harmony, orbital to jaw harmony, and facial balance. Data was not normally distributed, as resulted from Shapiro Wilk analysis. The analysis in this study was conducted using Shapiro Wilk and Spearman’s analysis. Results: There were changes in intramandibular harmony and facial balance in skeletal class II malocclusion with the maxillary first premolar extraction before and after treatment (p=0.025 and p=0.032, respectively ). There was no change found in the value of intermaxillary harmony and the orbital to the jaw harmony in skeletal class II malocclusion with extraction of the maxillary first premolar before and after treatment. There was a high effect of incisor retraction on the facial harmony values before and after treatment in class II treatment with extraction of two maxillary premolars (p=0.001). Conclusion: Treatment of skeletal class II malocclusion with extraction of two maxillary first premolars has a relationship between the magnitude of retraction and changes in facial harmony values based on Arnett and Bergmann’s analysis.Keywords: Class II skeletal malocclusion, extraction of two maxillary first premolar, facial harmony.

scholarly journals Dentoskeletal effects of Twin Block appliance in patients with Class II malocclusion

2021 ◽  
Author(s):  
Mahamad Irfanulla Khan ◽  
Praveen Kumar Neela ◽  
Nayeem Unnisa ◽  
Ajit Kumar Jaiswal ◽  
Nadeem Ahmed ◽  
...  
Keyword(s):  
Class Ii ◽  
Post Treatment ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Mandibular Growth ◽  
Twin Block ◽  
Lateral Cephalograms ◽  
Division 1 ◽  
Pre Treatment ◽  
Class Ii Division 1

Background and aim. Class II malocclusions are most commonly seen in orthodontic practice and in the recent times Twin Block appliance has been the most popular and widely used among removable functional appliances for the correction of Class II malocclusion in growing patients. The aim of this retrospective study was to evaluate the dentoskeletal effects produced by the Twin Block appliance for the correction of Class II division 1 malocclusion with retrognathic mandible. Methods. Pre-treatment (T1) and post-treatment (T2) lateral cephalograms of 30 patients treated with Twin Block appliance (mean age  =  10.8 ± 1.2 years) for the correction of class II division 1 malocclusion were compared with the 30 untreated class II control patients (mean age 11.2 ± 0.8 years) who did not undergo any treatment during this period. Both the groups were evaluated for the dentoskeletal changes using 24 angular and linear cephalometric measurements. The differences between the pre and post-treatment were calculated using a paired t-test. Results. The cephalometric analysis revealed that the Twin Block appliance stimulated mandibular growth and statistically significant differences were found between the two groups. Twin Block patients showed a statistically very high significant (p<0.001) increase in mandibular length (6.02 mm) compared with the control group (0.3 mm). ‘Headgear effect’ on the maxilla, increase in lower anterior facial height, significant reduction of overjet, overbite and Class I molar relationship was achieved in the Twin Block group. However, no significant changes appeared in the control group. Conclusion: The results of the present study conclude that the Twin Block appliance is effective in the treatment of Class II malocclusion and this is due to a combination of skeletal and dentoalveolar changes in both the arches.

Cytoprotective Effect of Tocotrienol-Rich Fraction and α-Tocopherol Vitamin E Isoforms Against Glutamate-Induced Cell Death in Neuronal Cells

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0140-0151 ◽  
Author(s):  
Thilaga Rati Selvaraju ◽  
Huzwah Khaza’ai ◽  
Sharmili Vidyadaran ◽  
Mohd Sokhini Abd Mutalib ◽  
Vasudevan Ramachandran ◽  
...  
Keyword(s):  
Vitamin E ◽  
Cell Viability ◽  
Neuronal Cells ◽  
Positive Control ◽  
Post Treatment ◽  
Mitochondrial Activity ◽  
Before And After ◽  
Pre Treatment ◽  
Tocotrienol Rich Fraction ◽  
Major Mediator

Glutamate is the major mediator of excitatory signals in the mammalian central nervous system. Extreme amounts of glutamate in the extracellular spaces can lead to numerous neurodegenerative diseases. We aimed to clarify the potential of the following vitamin E isomers, tocotrienol-rich fraction (TRF) and α-tocopherol (α-TCP), as potent neuroprotective agents against glutamate-induced injury in neuronal SK-N-SH cells. Cells were treated before and after glutamate injury (pre- and post-treatment, respectively) with 100 - 300 ng/ml TRF/α-TCP. Exposure to 120 mM glutamate significantly reduced cell viability to 76 % and 79 % in the pre- and post-treatment studies, respectively; however, pre- and post-treatment with TRF/α-TCP attenuated the cytotoxic effect of glutamate. Compared to the positive control (glutamate-injured cells not treated with TRF/α-TCP), pre-treatment with 100, 200, and 300 ng/ml TRF significantly improved cell viability following glutamate injury to 95.2 %, 95.0 %, and 95.6 %, respectively (p < 0.05).The isomers not only conferred neuroprotection by enhancing mitochondrial activity and depleting free radical production, but also increased cell viability and recovery upon glutamate insult. Our results suggest that vitamin E has potent antioxidant potential for protecting against glutamate injury and recovering glutamate-injured neuronal cells. Our findings also indicate that both TRF and α-TCP could play key roles as anti-apoptotic agents with neuroprotective properties.

scholarly journals Comparison of Selected Immune and Hematological Parameters and Their Impact on Survival in Patients with HPV-Related and HPV-Unrelated Oropharyngeal Cancer

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3256
Author(s):  
Adam Brewczyński ◽  
Beata Jabłońska ◽  
Agnieszka Maria Mazurek ◽  
Jolanta Mrochem-Kwarciak ◽  
Sławomir Mrowiec ◽  
...  
Keyword(s):  
Prognostic Factors ◽  
Oropharyngeal Cancer ◽  
Hematological Parameters ◽  
White Blood Cells ◽  
Post Treatment ◽  
Neutrophil Lymphocyte Ratio ◽  
Lymphocyte Ratio ◽  
Hpv Status ◽  
Pre Treatment ◽  
The Impact

Several immune and hematological parameters are associated with survival in patients with oropharyngeal cancer (OPC). The aim of the study was to analyze selected immune and hematological parameters of patients with HPV-related (HPV+) and HPV-unrelated (HPV-) OPC, before and after radiotherapy/chemoradiotherapy (RT/CRT) and to assess the impact of these parameters on survival. One hundred twenty seven patients with HPV+ and HPV− OPC, treated with RT alone or concurrent chemoradiotherapy (CRT), were included. Patients were divided according to HPV status. Confirmation of HPV etiology was obtained from FFPE (Formalin-Fixed, Paraffin-Embedded) tissue samples and/or extracellular circulating HPV DNA was determined. The pre-treatment and post-treatment laboratory blood parameters were compared in both groups. The neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), monocyte/lymphocyte ratio (MLR), and systemic immune inflammation (SII) index were calculated. The impact of these parameters on overall (OS) and disease-free (DFS) survival was analyzed. In HPV+ patients, a high pre-treatment white blood cells (WBC) count (>8.33 /mm3), NLR (>2.13), SII (>448.60) significantly correlated with reduced OS, whereas high NLR (>2.29), SII (>462.58) significantly correlated with reduced DFS. A higher pre-treatment NLR and SII were significant poor prognostic factors for both OS and DFS in the HPV+ group. These associations were not apparent in HPV− patients. There are different pre-treatment and post-treatment immune and hematological prognostic factors for OS and DFS in HPV+ and HPV− patients. The immune ratios could be considered valuable biomarkers for risk stratification and differentiation for HPV− and HPV+ OPC patients.

Impact of Dividend Tax Change on the Payout Policy of Indian Companies

2019 ◽  
Vol 20 (5) ◽  
pp. 1282-1291
Author(s):  
Sanjay Dhamija ◽  
Ravinder Kumar Arora
Keyword(s):  
Negative Impact ◽  
Payout Policy ◽  
Tax Law ◽  
Dividend Payout ◽  
Inside Ownership ◽  
Regulatory Changes ◽  
Before And After ◽  
The Government ◽  
The Impact ◽  
Dividend Tax

The article examines the impact of regulatory changes in the tax on dividends on the payout policy of Indian companies. The tax law was recently amended to levy tax on dividends received by large shareholders. As the promoters group is the largest shareholder, this is expected to have a negative impact on the payout policy of companies. Furthermore, companies with larger promoter holdings have a higher motivation to reduce their payout. The study covers 370 companies present in the BSE 500 Index and compares the dividend payout of the companies before and after the introduction of tax levy. The study finds that the newly introduced tax indeed caused a shift in the dividend policy of companies, particularly those companies which have high levels of inside ownership. The findings have significant implications for companies, investors and the government.

scholarly journals Infra-Zygomatic Mini Screws Compared to High Pull Headgear for Distalization And Intrusion of Maxillary Molars in Growing Patients with Class II Malocclusion: A Randomized Clinical Trial

2021 ◽  
Vol 2 (1) ◽  
pp. 14-19
Author(s):  
Ahmed K. Afify ◽  
Amr E. El-Dakroury ◽  
Sherif A. El-Kordy ◽  
Mostafa M. El-Dawlatly
Keyword(s):  
Clinical Trial ◽  
Clinical Study ◽  
Treatment Duration ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Maxillary Molars ◽  
Randomized Clinical Study ◽  
Molar Intrusion ◽  
Before And After ◽  
Patient Cooperation

Objective: The aim of the present randomized clinical study was to evaluate the distalization and intrusion effect of an Infra-zygomatic mini-screws supported appliance and compare it with high pull headgear appliance in treatment of growing patients with class II malocclusion. Methodology: 22 growing boys aged between (10 to 12 years) with class II div 1 malocclusion randomly divided to 2 equal groups. The first group treated with high pull headgear with acrylic splint and the second one treated with an Infra-zygomatic mini-screws supported appliance. The treatment duration was 8 months for both groups. Lateral cephalometric radiographs were taken before and after the treatment for each patient to be analyzed. Results: The maxillary first molar distalization was 2.58±2.31 mm in head gear group and 1.53±2.83 mm in mini-screws group. There was no significant maxillary first molar intrusion in both groups. There were no significant differences between the two groups. Conclusions: the mini-screws supported appliance can be used as the fixed replacement of the removable high pull headgear appliance with no need for patient cooperation.

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