scholarly journals Mandibular incisor inclination and gingival recession after treatment with the Jasper Jumper: a 10-year follow-up

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Wilana Moura ◽  
José Fernanado C. Henriques ◽  
Caroline M. Gambardela-Tkacz ◽  
Paula Cotrin ◽  
Daniela Garib ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Pearson Correlation ◽  
Gingival Recession ◽  
Class Ii ◽  
Crown Height ◽  
Mandibular Incisor ◽  
Class Ii Treatment ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

Abstract Objective To evaluate the long-term outcomes of Class II treatment with the Jasper Jumper appliance and comprehensive orthodontic treatment concerning inclination of the mandibular incisors and gingival recession. Methods Sixteen patients with Class II malocclusion at a mean age of 12.54y (SD = 1.17) were treated with the Jasper Jumper appliance and comprehensive orthodontic treatment. The mean treatment time was 2.05y (SD = 0.21). Dental records were taken before (T1), after treatment (T2) and 11.90y (SD = 0.48) after debonding (T3). The frequency of gingival recession, clinical crown height and mandibular incisor position were evaluated using intraoral photographs, digital models and lateral cephalograms. Interphase changes were evaluated using dependent t and McNemar’s tests. Correlation between clinical crown height and final position of the mandibular incisors was evaluated using Pearson correlation test (P < 0.05). Results The frequency of gingival recessions increased over time and was observed in 6 (9.4%), 12 (18.8%) and 24 (37.5%) of the mandibular incisors at T1, T2 and T3, respectively. A significant increase in labial inclination and protrusion of the mandibular incisors was observed between T1 and T2 interval. The clinical crown height significantly increased in the follow-up period (T3–T2) and in the complete observation time (T3–T1). There was no correlation between the amount of labial inclination and protrusion of the mandibular incisors and clinical crown height for all time intervals. Conclusion No significant correlation between the amount of labial movement of the mandibular incisor and clinical crown height increase was found.

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.

scholarly journals Effects of Presurgical Mandibular Incisor Decompensation on Long-Term Outcomes of Class III Surgical Orthodontic Treatment

2021 ◽  
Vol 10 (13) ◽  
pp. 2870
Author(s):  
Jung-Sub An ◽  
Wonchae Jeong ◽  
Liselotte Sonnesen ◽  
Seung-Hak Baek ◽  
Sug-Joon Ahn
Keyword(s):  
Orthodontic Treatment ◽  
Group Differences ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Long Term Outcomes ◽  
Mandibular Incisor ◽  
Skeletal Class ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

This research aimed to evaluate the effects of presurgical mandibular incisor decompensation on long-term outcomes of Class III surgical orthodontic treatment. Thirty-five patients with skeletal Class III malocclusion who received conventional surgical orthodontic treatment were included. Mandibular incisor brackets with −6° of inclination were placed normally in 18 patients (NB group) and inversely in 17 patients (RB group). Between-group differences and relationships between incisal and skeletal variables were analyzed based on lateral cephalograms at pretreatment, presurgery, postsurgery, posttreatment, and retention. Mandibular incisors were more labially inclined in the RB group than in the NB group from presurgery to retention. No significant between-group differences were observed in presurgical and postsurgical skeletal relationships. The NB group exhibited a larger overjet with deficient interincisal contact at postsurgery than the RB group. Skeletal Class III relationship was also more severe in the NB group at retention. More lingually inclined mandibular incisors at presurgery and larger overjet at postsurgery were correlated with a more severe skeletal Class III relationship at retention. Thus, establishing appropriate postsurgical overjet by sufficient presurgical mandibular incisor decompensation may play a significant role in postsurgical stability of Class III surgical orthodontic treatment.

scholarly journals Periodontal consequences of mandibular incisor proclination during presurgical orthodontic treatment in Class III malocclusion patients

2014 ◽  
Vol 85 (3) ◽  
pp. 427-433 ◽  
Author(s):  
Yoon Jeong Choi ◽  
Chooryung J. Chung ◽  
Kyung-Ho Kim
Keyword(s):  
Orthodontic Treatment ◽  
Alveolar Bone ◽  
Minimal Change ◽  
Class Iii ◽  
Mandibular Incisor ◽  
Factors Affecting ◽  
Crown Length ◽  
Attached Gingiva ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

ABSTRACT Objective:  To test the hypothesis that periodontal changes are similar between proclined and minimal-changed mandibular incisor position groups during presurgical orthodontic treatment for Class III orthognathic surgery. Materials and Methods:  The following measurements were performed before and after presurgical orthodontic treatment of 75 patients (proclination group, 39 subjects; minimal-change group, 36 subjects): clinical crown length, sulcus and bone probing depths, and width of attached gingiva from clinical examination; infradentale-to-MP (perpendicular distance of infradentale to mandibular plane) from examination of lateral cephalograms; and the distance between the cementoenamel junction and alveolar crest from examination of periapical radiographs. Data were compared between the two groups, and a regression analysis was performed to investigate factors affecting the periodontal changes. Results:  In both groups, clinical crown length and bone probing depth increased during presurgical orthodontics (P &lt; .05). Infradentale-to-MP and the width of attached gingiva decreased more in the proclination group than in the minimal-change group (P &lt; .05). Proclination and protrusion of the mandibular incisors, and treatment duration affected the periodontal changes. Conclusions:  The null hypothesis was rejected. Proclination of the mandibular incisors for decompensation in Class III surgery patients seems to result in labial alveolar bone recession and a decrease in width of attached gingiva. However, the amount of the periodontal recession appeared to be clinically insignificant.

Changes of Periodontal Tissues Because of Orthodontic Treatment: A Retrospective Study

2021 ◽  
pp. 232020682110034
Author(s):  
Hamad Alzoman ◽  
Khalid Alamoud ◽  
Waad K. Alomran ◽  
Abdullazez Almudhi ◽  
Naif A. Bindayel
Keyword(s):  
Retrospective Study ◽  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Positive Impact ◽  
Demographic Data ◽  
Gingival Recession ◽  
Confounding Factors ◽  
Crown Height ◽  
Periodontal Tissues ◽  
Before And After

Aim: To evaluate the periodontal status before and after orthodontic treatment and to analyze the confounding factors associated with it. Materials and Methods: The present retrospective study analyzed pre- and posttreatment records of a total of 60 patients. Intraoral digital photographs before and after the orthodontic treatment were used to measure the following three periodontal variables: (a) width of the keratinized gingiva, (b) gingival recession, and (c) the status of interdental papilla. The ImageJ 46 software imaging program was used to perform the required measurements. The clinical data were then analyzed in an association with the participants’ demographic data, the type of orthodontic tooth movement, and other confounding factors. The data obtained were manually entered into the statistical package and analyzed using a significance level set at P < .05. Descriptive statistics, paired t-tests, and Pearson’s correlation analysis were used to identify differences among the studied variables. Results: Among the 60 patients, the majority (66.7%) were females. Most cases of the treated malocclusion were Class II, and most patients underwent intrusion and retrusion movements. The width of keratinized gingiva increased for most sites of upper teeth. In contrast, the lower teeth showed a mix of improvement and compromised width of keratinized gingiva. As a measure of gingival recession, the difference of clinical crown height revealed the tendency toward a reduced clinical crown height for most sites. Upper left lateral incisors and canines showed significant values with regard to keratinized gingival width measurements and tooth movements such as extrusion and intrusion movements. Likewise, with regard to the clinical crown height, upper right central incisors showed significant differences when correlated with the interincisal angle, lower incisors to the mandibular plane, and upper incisors to the NA line. The upper lateral incisors also showed significant correlations to certain cephalometric measurements. Conclusions: The orthodontic treatment was found to exert a significantly positive impact on the surrounding periodontium, particularly in the upper canine areas. Likewise, various types of tooth movement were found to positively affect the periodontium.

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 Correction of gummy smile by superior repositioning of maxilla in Bangladeshi people

2016 ◽  
pp. 1-5
Author(s):  
Abdullah Al Masud ◽  
Muhammad Shohag Shikder ◽  
Mohammad Tofazzal Hossan ◽  
Mohammad Mahfuzul Gani ◽  
Mohammad Wahidul Islam
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Class I ◽  
Class Ii Malocclusion ◽  
Le Fort I Osteotomy ◽  
Le Fort ◽  
Le Fort I ◽  
Gummy Smile

Vertical maxillary excess is associated with gummy smile, incompetent lip,  bimaxillary proclination, Angle’s class-I or class-II malocclusion with or without retogenia. After proper evaluation preoperative orthodontic treatment was performed in every cases and superior repositioning of the maxilla by Le Fort-I osteotomy is presented. Three patients with maxillary excess associated with retrogenia or microgenia were treated with this technique in combination with genioplasty. The maxillary segment was repositioned a maximum of 7.0 mm superiorly at point A. The mandible autorotated anterosuperiorly to achieve sound occlusion. Point B moved 1.0–3.0 mm anteriorly and 5.0–8.0 mm superiorly. The pogonion moved 4.0 mm anteriorly in a case done without genioplasty and the pogonion moved maximum 8.0mm in case done in combination with genioplasty. All patients obtained sound occlusion and a good profile after the operation. Almost no skeletal relapse was observed during 3 years of postoperative follow-up. Amount of gingiva showing during smile was ranges from 5.0mm –7.0mm which was 0-2.0mm after superior repositioning of the maxilla. Ban J Orthod & Dentofac Orthop, April 2016; Vol-6 (1-2), P.1-5

scholarly journals Transmigrated Mandibular Canine Guided into its Normal Position

2020 ◽  
Author(s):  
Itamar Antonio Taffarel ◽  
Ivan Pedro Taffarel ◽  
Gil Guilherme Gasparello ◽  
Matheus Melo Pithon ◽  
Orlando Motohiro Tanaka
Keyword(s):  
Case Report ◽  
Orthodontic Treatment ◽  
Aesthetic Outcome ◽  
Normal Position ◽  
Correct Position ◽  
Mandibular Canine ◽  
Treatment Complexity ◽  
Stable Result ◽  
Mandibular Incisors

Transmigrated mandibular canines increase treatment complexity in terms of both anchorage and biomechanical planning, posing challenges for both Orthodontists and Oral Surgeons. This case report presents the orthodontic treatment in a 12-year-old girl patient, with transmigrated and impacted mandibular right canine positioned horizontally below the apices of the mandibular incisors. The mandibular deciduous right canine was extracted followed by the traction of the transmigrated permanent canine. Eruption was properly guided, and the correct position of the tooth was orthodontically guided into its normal position in the arch. The patient’s occlusion was significantly improved with good aesthetic outcome, functional occlusion, and a stable result after 1.5 years of follow-up.

Dental and skeletal effects after total arch distalization using modified C-palatal plate on hypo- and hyperdivergent Class II malocclusions in adolescents

2020 ◽  
Author(s):  
Chang Yoon Jung ◽  
Jae Hyun Park ◽  
Ja Hyeong Ku ◽  
Nam-Ki Lee ◽  
Yoonji Kim ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Study Group ◽  
Class Ii Malocclusion ◽  
Plane Angle ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Palatal Plate ◽  
Skeletal Effects ◽  
Facial Types

ABSTRACT Objectives To compare the dental and skeletal treatment effects after total arch distalization using modified C-palatal plates (MCPPs) on adolescent patients with hypo- and hyperdivergent Class II malocclusion. Materials and Methods The study group included 40 patients with Class II malocclusion (18 boys and 22 girls, mean age = 12.2 ± 1.4 years) treated with MCPPs. Fixed orthodontic treatment started with the distalizing process in both groups. Participants were divided into hypo- or hyperdivergent groups based on their pretreatment Frankfort mandibular plane angle (FMA) ≤22° or ≥28°, respectively. Pre- and posttreatment lateral cephalograms were digitized, and 23 variables were measured and compared for both groups using paired and independent t-tests. Results The hyper- and hypodivergent groups showed 2.7 mm and 4.3 mm of first molar crown distalizing movement, respectively (P &lt; .001). The hypodivergent group had a slight 2.2° crown distal tipping of first molars compared with 0.3° in the hyperdivergent group. After distalization, the FMA increased 3.1° and 0.3°, in the hypodivergent and hyperdivergent groups, respectively (P &lt; .001). SNA decreased in the hypodivergent group, while other skeletal variables presented no statistically significant differences in the changes between the groups. Conclusions The hypodivergent group showed more distal and tipping movement of the maxillary first molar and increased FMA than the hyperdivergent group. Therefore, clinicians must consider vertical facial types when distalizing molars using MCPPs in Class II nonextraction treatment.

scholarly journals Twenty-year follow-up of functional treatment with a bionator appliance: A retrospective dental cast analysis

2019 ◽  
Vol 90 (2) ◽  
pp. 209-215 ◽  
Author(s):  
Rebecca Jungbauer ◽  
Vasiliki Koretsi ◽  
Peter Proff ◽  
Ingrid Rudzki ◽  
Christian Kirschneck
Keyword(s):  
Class Ii ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Par Index ◽  
Skeletal Class Ii ◽  
Cast Analysis ◽  
Dental Cast ◽  
Intercanine Distance

ABSTRACT Objective: To investigate changes in dental arch configuration, relationship, and malocclusion directly after Class II malocclusion treatment with a Balters bionator modified by Ascher as well as 20 years after treatment. Materials and Methods: Orthodontic dental cast analysis of 18 patients with skeletal Class II treated with a bionator without any additional fixed therapy was performed with a digital caliper at three stages: before (T0), after (T1) and 20 years after (T2) treatment. Arch perimeter and depth, intermolar and intercanine distance, overjet, overbite, sagittal molar and canine relationship, mandibular incisor irregularity (Little's index), and malocclusion (PAR index) were assessed. Results: During treatment (T0–T1), upper arch perimeter significantly increased with a significant decrease in the upper and lower arch perimeter long-term (T1–T2), whereas corresponding arch depths changed only slightly in both periods. Transverse intermolar width increased significantly during treatment, remaining almost constant from T1 to T2. Lower intercanine distance remained fairly unchanged during treatment, but decreased significantly during follow-up. Lower incisor irregularity improved slightly during treatment but increased significantly long-term. After treatment, sagittal molar relationships on both sides were improved, overjet and overbite reduced; these significant changes remained stable long-term. The peer assessment rating (PAR) index was significantly lower after treatment and increased insignificantly during follow-up. Conclusions: 20 years after bionator treatment without additional fixed appliances, the improved sagittal relationship and the reduced overjet and PAR index remained fairly stable. Long-term changes are most likely due to physiological aging processes and are not associated with bionator treatment.

scholarly journals Mandibular symphysis morphology and dimensions in different anteroposterior jaw relationships

2013 ◽  
Vol 84 (2) ◽  
pp. 304-309 ◽  
Author(s):  
Susan N. Al-Khateeb ◽  
Emad F. Al Maaitah ◽  
Elham S. Abu Alhaija ◽  
Serene A. Badran
Keyword(s):  
Correlation Coefficient ◽  
Alveolar Bone ◽  
Pearson Correlation ◽  
Class Ii ◽  
Class I ◽  
Pearson Correlation Coefficient ◽  
Strongly Correlated ◽  
Class Iii ◽  
Mandibular Symphysis ◽  
Lateral Cephalograms

ABSTRACT Objective: To assess the morphology and dimensions of mandibular symphysis (MS) in different anteroposterior jaw relationships and to investigate whether craniofacial parameters have any correlation with its shape and/or dimensions. Materials and Methods: Lateral cephalograms of subjects with Class I, Class II, and Class III skeletal relationships were traced. Several craniofacial and MS parameters were measured. MS parameters were compared between the three groups using analysis of variance and were correlated with the craniofacial parameters using the Pearson correlation coefficient. Results: Larger angle of concavity of the chin, more inclination of the alveolar bone toward the mandibular plane, and larger MS dimensions and area (P &lt; .001) were found with a Class III skeletal relationship compared to Class I and Class II relationships. The Pearson correlation coefficient between Id-Me and AFH was r  =  0.83 and between Id-Me and LAFH it was r  =  0.81. Conclusions: The dimensions and configuration of MS in the Class III relationship were different than those in Class I and Class II relationships; the alveolar part of MS compensated for the skeletal relationship in the Class III pattern. MS dimensions were strongly correlated to anterior facial dimensions.

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