Mucogingival considerations in orthodontic treatment

Area of Science:

• Periodontology
• Orthodontics
• Dental tissue engineering

Background:

• Mucogingival complex alterations are common during orthodontic treatment.
• Maintaining periodontal integrity is crucial for successful orthodontic therapy, even with limited gingival zones.

Purpose of the Study:

• To investigate the relationship between orthodontic tooth movement and mucogingival complex changes.
• To identify key factors influencing soft tissue margin position and gingival dimensions during orthodontic therapy.

Main Methods:

• Analysis of mucogingival complex alterations during orthodontic tooth movement.
• Evaluation of the influence of tooth movement direction and gingival thickness on soft tissue changes.

Main Results:

• Gingival apico-coronal width (height) does not independently affect mucogingival complex alterations.
• Lingual tooth movement leads to coronal migration of the soft tissue margin (decreased clinical crown height).
• Facial tooth movement results in increased clinical crown height due to reduced gingival height.
• Gingival recession risk is associated with tooth movement outside alveolar bone housing, creating dehiscence.

Conclusions:

• Periodontal integrity can be preserved during orthodontics, irrespective of initial gingival height.
• Tooth movement direction and bucco-lingual gingival thickness are critical determinants of mucogingival changes.
• Orthodontic treatment planning must account for these factors to prevent recession defects.