scholarly journals Comparison of Two Protocols for the Treatment of Class 2 Malocclusion

2021 ◽  
pp. 1-6
Author(s):  
Gurel H.G. ◽  
Z Novruzov ◽  
M Behruzoglu ◽  
Gurel H.G.
Keyword(s):  
Analysis Of Variance ◽  
Active Treatment ◽  
Cephalometric Analysis ◽  
Block Group ◽  
Upper Lip ◽  
Eating Time ◽  
Twin Block ◽  
Block Sample ◽  
Facial Height

Purpose: The purpose of this study was to compare the outcomes of the treatment with the twin block and modified twin block appliances in growing patients with Class 2 malocclusion. Materials and Methods: A cephalometric analysis was performed in 51 patients. The twin block sample consisted of 23 patients, 10-girls and 13-boys (mean age 10.46±0.71 years at the start of treatment, T1, and 12.84±0.78 years at the end of active treatment, T2). The modified twin block sample consisted of 28 patients, 18 girls and 15 boys (mean age 11.78±0.91 years at T1, and 13.32±0.56 years at T2). The twin block activators were used during the day, except for eating time, and the modified ones were used only at night. Duration of the treatment was 16-20 months. The changes from T2 to T1 and the differences between the groups were compared with the analysis of variance. Results: SNB angle in the twin block group showed 1.25±1.39 degrees change and in the modified twin block group, it exhibited 3.69±1.01 degrees change. Overjet in the group with twin block decreased 4.58±1.59 mm, and in the group with modified twin block it decreased 4.43±1.41 mm. In the modified twin block group, there was more retrusion of upper incisors in comparison with the twin block group. Accordingly, under the effect of modified twin block, retrusion of the upper lip was observed. Conclusion: Through modifying the twin block appliance, it is possible to ensure the comfort of the patients by reducing the daily usage, to reposition the mandibula forward and to correct overjet and sagittal dento-skeletal relationships without increasing facial height and to improve positions of upper incisors and lips.

scholarly journals Effect of modified twin block appliance used for distoclusion treatment on stomatognathic system

2018 ◽  
Vol 99 (3) ◽  
pp. 426-432
Author(s):  
Z G Novruzov ◽  
R K Alieva ◽  
Z I Garaev ◽  
S K Kulieva
Keyword(s):  
Soft Tissues ◽  
Control Group ◽  
Study Group ◽  
Cephalometric Analysis ◽  
Upper Lip ◽  
Duration Of Treatment ◽  
Twin Block ◽  
Stomatognathic System ◽  
Before And After ◽  
The Face

Aim. Study of the effect of modified twin block activator used for distoclusion treatment on stomatognathic system and its improvement. Methods. 55 patients with skeletal distoclusion were examined. Out of them 28 patients treated orthodontically comprised the study group and 27 non-treated patients were included into the control group. The patients' age was 10-14 years (mean age 11.78±0.91), the duration of treatment was 1.5-2 years (mean duration 1.82±0.43). To avaluate the changes in stomatognathic system, cephalometric analysis was performed before and after treatment, and in the control group cephalometric analysis was performed with a 2-year interval. Results. During treatment with modified twin block appliance, SNB angle reached norm (80°). This is an important positive result in the treatment of distoclusion. ANB angle reflecting sagittal relationship between the upper and lower jaws and WITS decreased and reached normal size. Overjet normalized due to upper incisors retrusion and repositioning of the mandible forward in patients of the study group. In this group due to changes in soft tissues, in-profile esthetic and harmonious appearance of lips and chin was restored. In case of relative physiological rest the opened lips became closer and provided esthetic optimum of the face. Conclusion. Use of modified twin block appliance for the treatment of patients with distoclusion due to repositioning of the mandible forward allows improving sagittal relationship between the upper and lower jaws as well as overjet correction without increasing face height; use of modified twin block appliance allows normalizing sagittal occlusion and protrusion of upper incisors and upper lip.

Assessment of Craniofacial Morphology in Mouth Breathing Children. A retrospective case-control study

2019 ◽  
Vol 70 (10) ◽  
pp. 3649-3653
Author(s):  
David Angelescu ◽  
Teodora Angelescu ◽  
Meda Romana Simu ◽  
Alexandrina Muntean ◽  
Anca Stefania Mesaros ◽  
...  
Keyword(s):  
Case Control Study ◽  
Case Control ◽  
Craniofacial Morphology ◽  
Respiratory Pattern ◽  
Control Group ◽  
Upper Lip ◽  
Retrospective Case ◽  
Oral Breathing ◽  
Facial Height ◽  
Control Study

The aim of this retrospective case-control study is to determine a possible correlation between breathing mode and craniofacial morphology. The study was carried out in the Department of Pedodontics,Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania. The sample comprised 80 patients, age between 6 and 13 years, which were divided in two groups based on respiratory pattern: control group composed of 38 nasal breathing children and case group composed of 42 oral breathing children. Three quantitative craniofacial parameters were measured from the frontal and lateral photos: facial index, lower facial height ratio and upper lip ratio. The statistical analysis showed a significant higher facial index (p=0.006*) and an increase lower facial height (p=0.033*) for the oral breathers group. No differences in facial morphology were found between genders and age groups, when comparing the data between the same type of respiratory pattern children. Spearman�s rho Correlation show a significant positive correlation (p=0.002*) between facial index and lower facial height and a significant negative correlation between facial index and upper lip (p=0,005*). Long faces children are more likely to develop oral breathing in certain conditions, which subsequently have a negative effect on increasing the lower facial height by altering the postural behavior of mandible and tongue.

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.

scholarly journals Dynamic smile evaluation in different skeletal patterns

2016 ◽  
Vol 86 (6) ◽  
pp. 1019-1025 ◽  
Author(s):  
Noshi Siddiqui ◽  
Pradeep Tandon ◽  
Alka Singh ◽  
Jitesh Haryani
Keyword(s):  
Analysis Of Variance ◽  
Upper Lip ◽  
Chi Square ◽  
Causative Factors ◽  
Skeletal Pattern ◽  
Width Change ◽  
Positive Correlations ◽  
Post Hoc ◽  
Cephalometric Measurements ◽  
Horizontal Pattern

ABSTRACT Objective: To evaluate dynamic smile in different skeletal patterns and to correlate vertical smile parameters with the underlying causative factors. Materials and Methods: A total of 150 participants ranging in age from 16–25 years were selected and divided into one of three groups—horizontal, average, and vertical skeletal pattern—using the following three cephalometric parameters: SN-MP, FMA, and Jarabak ratio. Videographic records of smile were obtained, and measurements were recorded and analyzed at rest, including upper lip length, and during smile, including maxillary incisal display, interlabial gap, intercommisural width, change in upper lip length, and smile arc. Differences among the three groups were subjected to two-way analysis of variance and post hoc and chi-square tests for smile arc. Correlations between vertical smile variables and vertical skeletal (N-ANS, N-Me) and dental cephalometric measurements (U1 to palatal plane) were also investigated. Results: Vertical parameters were significantly increased in the vertical pattern when compared with the horizontal pattern, ie, upper lip length (P < .01), maxillary incisal display (P < .001), interlabial gap (P < .001), and change in upper lip length (P < .001), whereas intercommisural width was significantly decreased in vertical pattern when compared with the horizontal pattern (P < .001). Flat smile arc was seen more frequently in the horizontal pattern. Positive correlations were found between the N-Me, U1-PP, and change in upper lip length with vertical smile parameters. Conclusions: Different skeletal patterns exhibit their characteristic smile features. Upper lip length is not responsible for increased incisal display during smile. Increased incisal display during smile is more closely associated with upper lip elevation than vertical skeletal and dental factors.

scholarly journals Morphological and Functional Parameters in Patients with Tooth Wear before and after Treatment

2013 ◽  
Vol 7 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Teresa Sierpinska ◽  
Joanna Kuc ◽  
Maria Golebiewska
Keyword(s):  
Tooth Wear ◽  
Post Treatment ◽  
Vertical Dimension ◽  
Cephalometric Analysis ◽  
Activity Levels ◽  
Facial Skeleton ◽  
Facial Aesthetics ◽  
Facial Height ◽  
Occlusal Vertical Dimension ◽  
Pre Treatment

Advanced tooth wear often results in lost vertical dimension and impacts facial aesthetics. Complex restorative treatment can replace the lost tooth structure and improve functional occlusal and facial skeleton parameters. Purpose: The aim of the study is to assess changes in the morphological and functional occlusal parameters of the facial skeleton after prosthetic rehabilitation that increased lost occlusal vertical dimension. Material and Methodology: 50 patients with advanced tooth wear were clinically examined, to assess the degree of wear. Each subject underwent cephalometric analysis, digital occlusal analysis, and electromyographic analysis, of the anterior temporalis, superficial masetter, anterior digastric, and the sternocleidomastoid muscles. Prosthodontic treatment was performed to restore the occlusal vertical dimension of each subject’s occlusion, which was followed by repeating the pretreatment analyses. Pre and post treatment parameters were statistically compared. Results: Pre-treatment cephalometric analysis showed that lost vertical dimension reduced anterior facial height and resulted in small angular skeletal parameters. Post treatment anterior facial height increased from the increased occlusal vertical dimension. The mean value of functional electrical activity during clenching post treatment, increased compared to pretreatment. Conclusion: Increasing the vertical dimension of occlusion improved facial aesthetics by positively affecting facial skeletal angles. The restored occlusal surface morphology changed the pre treatment flat broad occlusal contacts into more point contacts. The increased vertical dimension of occlusion after treatment also increased muscle activity levels over the pretreatment levels after three months period of adaptation.

Intrasphenoidal Migration of a Premaxillary Kirschner Wire

2000 ◽  
Vol 37 (2) ◽  
pp. 209-211 ◽  
Author(s):  
Aycan KayikçOǧlu ◽  
Sebat Karamüsel ◽  
Emin Mavili ◽  
Yücel Erk ◽  
Kemal Benli
Keyword(s):  
Foreign Body ◽  
Cleft Lip ◽  
Kirschner Wire ◽  
Cephalometric Analysis ◽  
Potential Danger ◽  
Upper Lip ◽  
Bilateral Cleft Lip ◽  
The Wire

Objective The use of Kirschner wire for the fixation of premaxilla is a well-known method in bilateral cleft lip surgery. We report a case in which the Kirschner wire of the premaxillary fixation had migrated intrasphenoidally. Results and Conclusions The foreign body was accidentally discovered during a cephalometric analysis and was taken out surgically through an upper lip sulcus incision. Although the wire remained asymptomatic for 10 years, it constituted a potential danger for intracranial migration.

scholarly journals Computerized cephalometric evaluation of changes following treatment with complete dentures

2012 ◽  
Vol 65 (3-4) ◽  
pp. 163-167
Author(s):  
Ljiljana Strajnic ◽  
Branka Miskovic
Keyword(s):  
Longitudinal Analysis ◽  
Computer Software ◽  
Complete Denture ◽  
Cephalometric Analysis ◽  
Complete Dentures ◽  
Longitudinal Evaluation ◽  
Facial Height ◽  
Cephalometric Radiograph ◽  
Edentulous Patients ◽  
Diagnostics And Therapy

The aim of this study was to provide longitudinal evaluation of the changes after complete dentures therapy and the rate of residual ridge resorption through a six-year period of denture wearing. The authors presented the case of a 76-year-old patient, edentulous for twelve years, wearing complete dentures for six years, with the eugnat jaw relationship. Cephalometric radiograph was carried out in the process of new complete denture production, while the evaluation was carried out after six years. Cephalometric analysis was performed by using ?Dr. Ceph? computer software (FYI Technologies, GA, USA). After six years, the reduction of anterior total facial height was 5.5 mm and the anterior lower facial height was 5.5 mm, the vertical residual ridge reduction of the maxilla was 1.4 mm and the reduction of the mandible was 3mm. The study confirms the reliability and advantages of cephalometric analyses and reveals their application possibilities in prosthetic diagnostics and therapy, as well as in evaluation of rehabilitative results in edentulous patients and longitudinal analysis of changes on the orofacial complex tissues and intemaxillary relationships.

scholarly journals An Anthropometric Evaluation of Morphological Facial Height in Bangladeshi Young Adult

2015 ◽  
Vol 10 (2) ◽  
pp. 33-38
Author(s):  
Md Asaduzzaman Sheikh ◽  
Golam Mohiuddin Chowdhury ◽  
Ferdousy Jolly ◽  
Moniruzzaman
Keyword(s):  
Treatment Outcome ◽  
Soft Tissue ◽  
Treatment Planning ◽  
Armed Forces ◽  
Cross Sectional Study ◽  
Medical Institute ◽  
Cephalometric Analysis ◽  
Similar Data ◽  
Cross Sectional ◽  
Facial Height

Introduction: Anthropometry is applied to obtain measurements of living subjects for identifying age, stature, proportions body and/ or face and various dimensions related to particular race or an individual. Facial anthropometric studies have got vast implications in health related fields and are useful for orthodontists, plastic surgeons, maxillofacial surgeons for their treatment plans to evaluate treatment prognosis and determine treatment outcome. Prior to advent of cephalometric radiography, orthodontists often used anthropometric measurements to establish facial proportion. Although for orthodontists, this method was largely replaced by cephalometric analysis for many years, the recent emphasis on soft tissue proportions has brought soft tissue evaluation back into prominence. When there are questions about vertical facial proportions, it is better to make the measurement clinically rather than cephalometric analysis, because the soft tissue proportions, as seen clinically determine the facial appearance.Objective: To evaluate morphological facial height and to establish the upper & lower facial height proportions in Bangladeshi adult and to compare with similar data of various nations & ethnic groups.Method: This study was a descriptive observational cross sectional study by convenient sampling, conducted in AFMI (Armed Forces Medical Institute) among the 500 participants of Bangladeshi by birth with equal sex distribution aged 18-25 years. The anthropometric landmarks the nasion(n), subnasale (sn) and ganthion (gn), were marked on the participant’s face with a dermographic pen. With the help of a digital vernier sliding calipers, the measurements were taken in millimeters and the participant was in centric relation when measuring the facial height. The distance from ‘n’ to ‘sn’ is upper facial height (UFH), from ‘sn’ to ‘gn’ is lower facial height (LFH) and total facial height (TFH) is the sum of UFH and LFH.Conclusion: There is strong correlation among upper, lower and total facial height. The facial height proportion found in this study matches with ideal facial proportion widely practiced in clinical orthodontics for treatment planning and to determine treatment outcome. The findings of this study may help to establish the norms of facial proportion in Bangladeshi adult which will be helpful for treatment planning in orthodontic and reconstructive surgery without chephalomtric means.Journal of Armed Forces Medical College Bangladesh Vol.10(2) 2014

Dentofacial Form in the Five-Year-Old Child with Unilateral Cleft Lip and Palate

1994 ◽  
Vol 31 (5) ◽  
pp. 372-375 ◽  
Author(s):  
Frances Mackay ◽  
John Bottomley ◽  
Gunvor Semb ◽  
Christopher Roberts
Keyword(s):  
Health Care ◽  
Health Care Workers ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Racial Group ◽  
Cephalometric Analysis ◽  
Upper Lip ◽  
Quality Of Treatment ◽  
Care Workers

It is generally believed that studies of outcome for children with clefts of the lip and palate should be based on patients who are in their teens. This means that health care workers who look after these children would have to wait many years until the quality of treatment could be evaluated. In this study, significant differences between two centers, Oslo and Manchester, in facial form at the age of 5 years were detected. Based on cephalometric analysis, children from Manchester were more likely to have a retrognathic maxilla with the upper lip significantly behind the esthetic plane. An important future step may be the setting up of “reference centers” with a large archive of database information for each racial group. This would assist smaller centers in comparing their outcomes.

scholarly journals The maxillary incisor display at rest: analysis of the underlying components

2018 ◽  
Vol 23 (6) ◽  
pp. 48-55 ◽  
Author(s):  
Waqar Jeelani ◽  
Mubassar Fida ◽  
Attiya Shaikh
Keyword(s):  
Soft Tissue ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Plane Angle ◽  
Upper Lip ◽  
Facial Height ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
The Relationship ◽  
Mandibular Plane Angle

ABSTRACT Introduction: Maxillary incisal display is one of the most important attributes of smile esthetics. Objective: The aim of this study was to determine the relationship between maxillary incisal display at rest (MIDR) and various soft tissue, hard tissue and dental components. Methods: A cross-sectional study was conducted on 150 subjects (75 males, 75 females) aged 18-30 years. The MIDR was recorded from the pretreatment orthodontic records. The following parameters were assessed on lateral cephalograms: ANB angle, mandibular plane angle, palatal plane angle, lower anterior and total anterior facial heights, upper incisor inclination, upper anterior dentoalveolar height, and upper lip length, thickness and protrusion. The relationship between MIDR and various skeletal, dental and soft tissue components was assessed using linear regression analyses. Results: The mean MIDR was significantly greater in females than males (p = 0.011). A significant positive correlation was found between MIDR and ANB angle, mandibular plane angle and lower anterior facial height. A significant negative correlation was found between MIDR and upper lip length and thickness. Linear regression analysis showed that upper lip length was the strongest predictor of MIDR, explaining 29.7% of variance in MIDR. A multiple linear regression model based on mandibular plane angle, lower anterior facial height, upper lip length and upper lip thickness explained about 63.4% of variance in MIDR. Conclusions: Incisal display at rest was generally greater in females than males. Multiple factors play a role in determining MIDR, nevertheless upper lip length was found to be the strongest predictor of variations in MIDR.

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