Soft tissue changes following the extraction of premolars in nongrowing patients with bimaxillary protrusion. A systematic review.

@article{Leonardi2010SoftTC,
  title={Soft tissue changes following the extraction of premolars in nongrowing patients with bimaxillary protrusion. A systematic review.},
  author={Rosalia Maria Leonardi and Alberto Annunziata and Valeria Licciardello and Ersilia Barbato},
  journal={The Angle orthodontist},
  year={2010},
  volume={80 1},
  pages={
          211-6
        }
}
OBJECTIVE To quantify the amount of perioral tissue changes following the extraction of four premolars in patients with bimaxillary protrusion who had nearly completed active growth. MATERIALS AND METHODS A literature search was conducted to identify clinical trials that assessed cephalometric perioral soft tissue changes in patients affected by biprotrusion and treated with extractions. Electronic databases (PubMed, ISI WoS Science Citation Index Expanded, and HubMed) were searched… Expand
Soft Tissue Changes in Patients With Dentoalveolar Protrusion Treated With Maximum Anchorage: A Systematic Review and Meta-analysis.
TLDR
It was seen that MIs facilitated favorable soft tissue profile than the conventional anchorage devices, however, more high-quality studies are warranted to confirm the clinical effectiveness of MIs. Expand
Anchorage methods and treatment outcomes in the treatment of bimaxillary protrusion: a systematic review and meta-analysis
TLDR
There is very low-quality evidence to suggest TADs provide better anchorage and shorter treatment duration in the orthodontic treatment of bimaxillary protrusion. Expand
Changes in Soft Tissue Profile After Orthodontic Treatment With and Without Extraction: A Systematic Review and Meta‐analysis
TLDR
A significant retraction of the lips and an increase in the nasolabial angle are associated with extraction protocols, but the degree to which these changes are considered detrimental/beneficial to the profile could be affected by different factors. Expand
Rickett’s and Holdaway analysis following extraction of four premolars and orthodontic treatment in bimaxillary protrusion female Malays
TLDR
In Malaysian females, significant changes were found in soft-tissue profile post-orthodontic treatment with corresponding simultaneous change in the underlying hard tissue. Expand
Soft tissue changes following extraction vs. nonextraction orthodontic fixed appliance treatment: a systematic review and meta‐analysis
TLDR
Patient age, extraction protocol, and amount of upper incisor retraction during treatment were significantly associated with the observed extraction effects, while the quality of evidence was very low in all cases. Expand
Post-orthodontic cephalometric variations in bimaxillary protrusion cases managed by premolar extraction – A retrospective study
TLDR
A statistically significant increase in the nasolabial angle and upper lip length was found in relation to upper and lower incisor retraction and retroclination in bimaxillary protrusion patients after extraction of the first four premolars and subsequent retraction of the anterior teeth. Expand
Effect of large incisor retraction on upper airway morphology in adult bimaxillary protrusion patients.
TLDR
Large incisor retraction leads to narrowing of the upper airway in adult bimaxillary protrusion patients, and the largest change in the cross-sectional area is always noted in the hypopharynx. Expand
Orthodontic incisor retraction caused changes in the soft tissue chin area: a retrospective study
TLDR
The orthodontic incisor retraction could cause soft tissue thickness changes (i.e. an increase in L1c-LL and Pog-Pog’ and a decrease in B-B′) without area changes. Expand
Cephalometric evaluation of soft tissue changes after extraction of upper first premolars in class ΙΙ div 1 patients
TLDR
Extraction of upper first premolars in patients with class ΙΙ div 1 malocclusion resulted in normal position of lips as presented by Holdaway, Legan and Ricketts which play a role in aesthetic profile, but the amount of lip retraction was different from patient to patient. Expand
Measurement of three-dimensional perioral soft tissue changes in dentoalveolar protrusion patients after orthodontic treatment using a structured light scanner.
OBJECTIVE To evaluate the three-dimensional (3D) perioral soft tissue changes after orthodontic treatment in patients with dentoalveolar protrusion using structured light-based scanners. MATERIALSExpand
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TLDR
Comparing the esthetic impact of extraction and nonextraction therapy on two morphologically similar samples of African American patients with Class I and II malocclusions implies that there is significant interaction among the type of treatment, the race of the patient, and both the race and professional background of the observer. Expand
Profile changes following orthodontic treatment of bimaxillary protrusion in adults with the Begg appliance.
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TLDR
This study shows that the Begg appliance has the ability to significantly reduce bimaxillary protrusions and thereby improve facial aesthetics. Expand
Profile changes following orthodontic treatment of bimaxillary protrusion in adults with the Begg appliance.
TLDR
This study shows that the Begg appliance has the ability to significantly reduce bimaxillary protrusions and thereby improve facial aesthetics. Expand
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TLDR
It is shown that the extraction of four premolars can be extremely successful in reducing the dental and soft tissue procumbency seen in patients with bimaxillary protrusion, thus providing a stronger evidence-based rationale for this treatment modality. Expand
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TLDR
The results of the study indicate that retraction of the lower lip correlates withretraction of both maxillary and mandibular anterior teeth and Mandibular incisor angulation was the only hard-tissue variable that could be used as a predictor in a regression model to explain lip response to orthodontic therapy. Expand
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Investigation of the influence of maxillary lip thickness and lip strain on the relationship between dental and integumental tissue changes in orthodontically treated patients found that there was significant correlation between osseous changes and soft-tissue changes. Expand
Profile changes following orthodontic correction of bimaxillary protrusion with a preadjusted edgewise appliance.
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TLDR
The result of treatment was a more harmonious soft tissue profile; with a less acute nasolabial angle, and an improvement in the inclination of maxillary and mandibular incisors. Expand
Long-term profile changes in extraction and nonextraction patients.
TLDR
If extraction and nonextraction patients are treated to the same incisor position and lip line, the treatment modality does not affect long-term soft tissue profile changes. Expand
Changes in soft tissue profile of African-Americans following extraction treatment.
TLDR
Changes in soft tissue profile of African-Americans following orthodontic treatment involving extraction of four premolars are determined and dentofacial complex and facial soft tissue as a result of treatment and growth are evaluated. Expand
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TLDR
There is no scientific evidence available to show which of the treatment modalities, grinding, Quad-helix, expansion plates, or rapid maxillary expansion, is the most effective for early correction of unilateral posterior crossbite. Expand
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