Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion
Introduction. The effects of orthodontic treatment are considered to be successful if the facial harmony is achieved, while the structures of soft tissue profile are in harmony with skeletal structures of neurocranium and viscerocranium. In patients with skeletal distal bite caused by mandi...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Serbian Medical Society
2015-01-01
|
| Series: | Srpski Arhiv za Celokupno Lekarstvo |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0370-8179/2015/0370-81791502012S.pdf |
| _version_ | 1819075806913101824 |
|---|---|
| author | Stamenković Zorana Raičković Vanja Ristić Vladimir |
| author_facet | Stamenković Zorana Raičković Vanja Ristić Vladimir |
| author_sort | Stamenković Zorana |
| collection | DOAJ |
| description | Introduction. The effects of orthodontic treatment are considered to be
successful if the facial harmony is achieved, while the structures of soft
tissue profile are in harmony with skeletal structures of neurocranium and
viscerocranium. In patients with skeletal distal bite caused by mandibular
retrognathism, facial esthetics is disturbed often, in terms of pronounced
convexity of the profile and change in the position and relationship of the
lips. Objective. The aim of this study was to determine the extent of soft
tissue profile changes in patients with skeletal Class II malocclusion
treated with three different orthodontic appliances: Fränkel functional
regulator type I (FR-I), Balters’ Bionator type I and Hotz appliance.
Methods. The study included 60 patients diagnosed with skeletal Class II
malocclusion caused by mandibular retrognathism, in the period of early
mixed dentition. Each subgroup of 20 patients was treated with a variety of
orthodontic appliances. On the lateral cephalogram, before and after
treatment, the following parameters were analyzed: T angle, H angle, the
height of the upper lip, the position of the upper and lower lip in relation
to the esthetic line. Within the statistical analysis the mean, maximum,
minimum, standard deviation, coefficient of variation, two-factor analysis
of variance with repeated measures and the factor analysis of variance were
calculated using ANOVA, Bonferroni test and Student’s t-test. Results. A
significant decrease of angles T and H was noticed in the application of
FR-I, from 21.60° to 17.15°, and from 16.45° to 13.40° (p<0.001). FR-I
decreased the height of the upper lip from 26.15 mm to 25.85 mm, while Hotz
appliance and Balters’ Bionator type I increased the height of the upper
lip, thereby deteriorating esthetics of the patient. Conclusion. All used
orthodontic appliances lead to changes in soft tissue profile in terms of
improving facial esthetics, with the most distinctive changes in the
application of Fränkel’s functional regulator type I, which is the most
successful appliance for achieving the overall facial harmony of the
patient. |
| first_indexed | 2024-12-21T18:31:16Z |
| format | Article |
| id | doaj.art-150ca6479e7b4ea3a7abd730d56c728a |
| institution | Directory Open Access Journal |
| issn | 0370-8179 |
| language | English |
| last_indexed | 2024-12-21T18:31:16Z |
| publishDate | 2015-01-01 |
| publisher | Serbian Medical Society |
| record_format | Article |
| series | Srpski Arhiv za Celokupno Lekarstvo |
| spelling | doaj.art-150ca6479e7b4ea3a7abd730d56c728a2022-12-21T18:54:15ZengSerbian Medical SocietySrpski Arhiv za Celokupno Lekarstvo0370-81792015-01-011431-2121510.2298/SARH1502012S0370-81791502012SChanges in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusionStamenković Zorana0Raičković Vanja1Ristić Vladimir2School of Dental Medicine, Department of Orthodontics, BelgradeSchool of Dental Medicine, Department of Orthodontics, BelgradeSchool of Dental Medicine, Department of Orthodontics, BelgradeIntroduction. The effects of orthodontic treatment are considered to be successful if the facial harmony is achieved, while the structures of soft tissue profile are in harmony with skeletal structures of neurocranium and viscerocranium. In patients with skeletal distal bite caused by mandibular retrognathism, facial esthetics is disturbed often, in terms of pronounced convexity of the profile and change in the position and relationship of the lips. Objective. The aim of this study was to determine the extent of soft tissue profile changes in patients with skeletal Class II malocclusion treated with three different orthodontic appliances: Fränkel functional regulator type I (FR-I), Balters’ Bionator type I and Hotz appliance. Methods. The study included 60 patients diagnosed with skeletal Class II malocclusion caused by mandibular retrognathism, in the period of early mixed dentition. Each subgroup of 20 patients was treated with a variety of orthodontic appliances. On the lateral cephalogram, before and after treatment, the following parameters were analyzed: T angle, H angle, the height of the upper lip, the position of the upper and lower lip in relation to the esthetic line. Within the statistical analysis the mean, maximum, minimum, standard deviation, coefficient of variation, two-factor analysis of variance with repeated measures and the factor analysis of variance were calculated using ANOVA, Bonferroni test and Student’s t-test. Results. A significant decrease of angles T and H was noticed in the application of FR-I, from 21.60° to 17.15°, and from 16.45° to 13.40° (p<0.001). FR-I decreased the height of the upper lip from 26.15 mm to 25.85 mm, while Hotz appliance and Balters’ Bionator type I increased the height of the upper lip, thereby deteriorating esthetics of the patient. Conclusion. All used orthodontic appliances lead to changes in soft tissue profile in terms of improving facial esthetics, with the most distinctive changes in the application of Fränkel’s functional regulator type I, which is the most successful appliance for achieving the overall facial harmony of the patient.http://www.doiserbia.nb.rs/img/doi/0370-8179/2015/0370-81791502012S.pdfFränkel functional regulatormalocclusionAngle Class IIorthodontic appliancesfunctionalsoft tissue profile |
| spellingShingle | Stamenković Zorana Raičković Vanja Ristić Vladimir Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion Srpski Arhiv za Celokupno Lekarstvo Fränkel functional regulator malocclusion Angle Class II orthodontic appliances functional soft tissue profile |
| title | Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion |
| title_full | Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion |
| title_fullStr | Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion |
| title_full_unstemmed | Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion |
| title_short | Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion |
| title_sort | changes in soft tissue profile using functional appliances in the treatment of skeletal class ii malocclusion |
| topic | Fränkel functional regulator malocclusion Angle Class II orthodontic appliances functional soft tissue profile |
| url | http://www.doiserbia.nb.rs/img/doi/0370-8179/2015/0370-81791502012S.pdf |
| work_keys_str_mv | AT stamenkoviczorana changesinsofttissueprofileusingfunctionalappliancesinthetreatmentofskeletalclassiimalocclusion AT raickovicvanja changesinsofttissueprofileusingfunctionalappliancesinthetreatmentofskeletalclassiimalocclusion AT risticvladimir changesinsofttissueprofileusingfunctionalappliancesinthetreatmentofskeletalclassiimalocclusion |