J Korean Assoc Oral Maxillofac Surg.  2021 Feb;47(1):3-14. 10.5125/jkaoms.2021.47.1.3.

Lip repositioning with or without myotomy: a systematic review

• Ardakani MT
• Moscowchi A
• Valian NK
• Zakerzadeh E

• KMID: 2513423
• DOI: http://doi.org/10.5125/jkaoms.2021.47.1.3

Abstract

Excessive gingival display is an esthetic issue that is commonly managed by different procedures. Lip repositioning is a modality to address concerns of affected patients. The aim of this review was to investigate the scientific evidence on outcomes and long-term stability of lip repositioning surgery with or without myotomy. The electronic search was conducted in three databases: MEDLINE, Embase, and the Cochrane Library up to October 2019. No publication status, language, or time restrictions were applied. The electronic search was complemented by a manual search of the reference lists. Three hundred thirty-eight studies were screened by title, and 16 articles remained for data extraction. The included studies assessed the lip repositioning procedure in 144 patients aged between 15-59 years (134 females and 10 males). Based on the available data, lip repositioning with myotomy/muscle containment can be a successful treatment for minor discrepancies in gingival display in selected cases. However, further well-organized controlled clinical trials are recommended to derive a conclusion about the long-term stability compared with other alternatives.

Keyword

Esthetics; Gingiva; Lip; Dental

Figure

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  Fig. 1 Flowchart of the study selection process.

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  Fig. 2 Forest plot of effect size for lip repositioning without myotomy/muscle containment after 6 months. (Std diff: standard difference, CI: confidence interval)

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  Fig. 3 Forest plot of effect size for lip repositioning with myotomy/muscle containment after 6 months. (Std diff: standard difference, CI: confidence interval)

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  Fig. 4 Forest plot of effect size for comparative studies after 6 months. Conventional: Lip repositioning; Modified: Lip repositioning with myotomy/muscle containment. (Std diff: standard difference, CI: confidence interval)

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