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 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.

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 Relationship between orthodontic treatment and gingival health: A retrospective study

2014 ◽  
Vol 08 (03) ◽  
pp. 373-380 ◽  
Author(s):  
Fatma Boke ◽  
Cagri Gazioglu ◽  
Sevil Akkaya ◽  
Murat Akkaya
Keyword(s):  
Retrospective Study ◽  
Orthodontic Treatment ◽  
Gingival Recession ◽  
Orthodontic Appliances ◽  
Lower Incisor ◽  
Gingival Health ◽  
Fixed Orthodontic Appliances ◽  
Significant Difference ◽  
Before And After ◽  
The Relationship

ABSTRACT Objective: The aim of this retrospective study was to evaluate the relationship between orthodontic treatment and gingival health. Materials and Methods: A total of 251 patients among whom 177 were girls and 74 were boys, recruited from the records pool of the Department of Orthodontics, Faculty of Dentistry, University of Gazi, were included in the study. Patients’ treatments have been completed by postgraduate students during the period between 2006 and 2012. Patients’ folders were analyzed according to their age, treatment time, and the type of orthodontic treatment. Intra-oral photographs were analyzed, and the presence or absence of visible plaque, visible inflammation, and gingival recession were recorded, and incisor inclinations analyzed on lateral cephalometric films, before and after orthodontic treatment. Results: No statistically significant difference was found in patients treated with functional appliances before and after treatment. In patients treated with fixed orthodontic appliances, visible plaque, visible inflammation, and gingival recession showed significant increases after treatment, gingival biotype did not show any significant difference. Positive correlation was found between lower incisor position and gingival recession in patients treated with fixed appliance and extraction. And also cuspids were the teeth with the highest prevalence of gingival recession. Conclusion: Considering the relationship between orthodontic treatment and gingival health, cooperation among patients, orthodontists, and periodontists is important.

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.

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>

scholarly journals Evaluation of the soft tissue treatment simulation module of a computerized cephalometric program

2014 ◽  
Vol 08 (02) ◽  
pp. 229-233
Author(s):  
Aslihan Zeynep Oz ◽  
Cenk Ahmet Akcan ◽  
Hakan El ◽  
Semra Ciger
Keyword(s):  
Soft Tissue ◽  
Vertical Plane ◽  
Class Ii ◽  
Maxillary Incisor ◽  
Upper Lip ◽  
Mandibular Incisor ◽  
Skeletal Class Ii ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Incisor Inclination

ABSTRACT Objective: The purpose of this study is to compare the accuracy of the treatment simulation module of Quick Ceph Studio (QCS) program to the actual treatment results in Class II Division 1 patients. Design: Retrospective study. Materials and Methods: Twenty-six skeletal Class II patients treated with functional appliances were included. T0 and T1 lateral cephalograms were digitized using QCS. Before applying treatment simulation to the digitized cephalograms, the actual T0-T1 difference was calculated for the SNA, SNB, ANB angles, maxillary incisor inclination, and protrusion and mandibular incisor inclination and protrusion values. Next, using the treatment simulation module, the aforementioned values for the T0 cephalograms were manually entered to match the actual T1 values taking into account the T0-T1 differences. Paired sample t-test were applied to determine the difference between actual and treatment simulation measurements. Results: No significant differences were found for the anteroposterior location of the landmarks. Upper lip, soft tissue A point, soft tissue pogonion, and soft tissue B point measurements showed statistically significant difference between actual and treatment simulation in the vertical plane. Conclusion: Quick Ceph program was reliable in terms of reflecting the sagittal changes that would probably occur with treatment and growth. However, vertical positions of the upper lip, soft tissue pogonion, soft tissue A point, and soft tissue B point were statistically different from actual results.

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 Correlation between objective and subjective evaluation of profile in bimaxillary protrusion patients after orthodontic treatment

2014 ◽  
Vol 85 (4) ◽  
pp. 690-698 ◽  
Author(s):  
Yi-Ping Huang ◽  
Wei-ran Li
Keyword(s):  
Orthodontic Treatment ◽  
Subjective Evaluation ◽  
Chinese Patients ◽  
Lower Incisor ◽  
Lower Lip ◽  
Lay Persons ◽  
Facial Esthetics ◽  
Incisor Inclination ◽  
Bimaxillary Protrusion ◽  
Cephalometric Measurements

ABSTRACT Objective:  To correlate the objective cephalometric measurements with subjective facial esthetics in patients with bimaxillary protrusion. Materials and Methods:  The sample consisted of 60 Asian-Chinese patients with bimaxillary protrusion who met the inclusion criteria. The facial esthetics of posttreatment profile and the change of profile on standardized lateral photographs were rated by a panel of 10 orthodontists and a panel of 10 lay persons with bimaxillary protrusion. All of the pretreatment and posttreatment cephalograms were digitized and traced. Twenty-five cephalometric measurements were constructed and analyzed. Correlations between the subjective facial esthetic scores and each cephalometric measurement were evaluated. Results:  The cephalometric measurements correlated with the facial esthetic scores of posttreatment profile given by the orthodontist and the lay persons were basically the same. For the evaluation of posttreatment profile in bimaxillary protrusion patients, the upper and lower lip to E-line, upper and lower incisor tip to AP plane, Pg-NB distance, mentolabial angle, and sulcus depth correlated significantly with the esthetic score. For the evaluation of profile change during orthodontic treatment, retraction of upper incisor relative to AP plane or the perpendicular line through sella (line Y), change of upper incisor inclination, change of mentolabial sulcus depth, and retraction of lips relative to E-line were correlated positively with the esthetic value. Conclusions:  Cephalometric measurements of lip position, incisor position, and chin morphology were key parameters correlated to facial esthetics.

scholarly journals A Retrospective Cephalometric Evaluation of Dental Changes with Activator and Activator Headgear Combination in the Treatment of Skeletal Class II Malocclusion

2011 ◽  
Vol 12 (1) ◽  
pp. 14-18 ◽  
Author(s):  
G Anil Kumar ◽  
Amit Maheshwari
Keyword(s):  
Class Ii ◽  
Combination Group ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Lateral Cephalograms ◽  
Functional Appliances

ABSTRACT Aim The aims of this study were to evaluate the dental changes brought about by activator and activator headgear combination (ACHG) and to determine whether we can achieve control over the lower incisor proclination which is a side effect of using functional appliances; or not, while treating cases of skeletal class II malocclusions. Methods Lateral cephalograms of 45 skeletal class II division 1 patients were selected for the study. Fifteen of them were successfully treated with an Andresen activator and the other 15 with an activator headgear combination. Fifteen class II subjects who had declined treatment served as the control group. Cephalometric landmarks were marked by one author to avoid interobserver variability. Results The results revealed that both the activator and the activator headgear combination significantly (p < 0.001) affected dental variables measured. The mandibular incisor proclination was effectively controlled in the activator headgear combination group. Conclusion An activator headgear combination would offer itself as a better option compared with activator alone in the treatment of skeletal class II malocclusions especially in cases with proclined mandibular incisors. Clinical significance When one of the treatment goals is to achieve a greater control over mandibular incisor proclination in the treatment of Skeletal Class II malocclusions, employing a combination of activator and headgear may substantially improve clinical outcomes. How to cite this article Lall R, Kumar GA, Maheshwari A Kumar M. A Retrospective Cephalometric Evaluation of Dental Changes with Activator and Activator Headgear Combination in the Treatment of Skeletal Class II Malocclusion. J Contemp Dent Pract 2011;12(1):14-18.

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.

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