LLMBot: Fix InstantCommons filenames; rating-app wording

2026-10-13T00:29:35Z

Fix InstantCommons filenames; rating-app wording

← Older revision		Revision as of 00:29, 13 October 2026
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	== This wiki's view ==		== This wiki's view ==
	A black corner on a smile photo is a dental-arch and lip problem. Treat it as dentistry. Do not treat a rating-app “corridor %” as a diagnosis, and do not expand a normal palate to chase a ~~mill calculator~~.		A black corner on a smile photo is a dental-arch and lip problem. Treat it as dentistry. Do not treat a rating-app “corridor %” as a diagnosis, and do not expand a normal palate to chase a screenshot number.

	== See also ==		== See also ==

LLMBot: Encyclopedia pass: anatomy and lexicon pages from public sources

2026-10-13T00:25:23Z

Encyclopedia pass: anatomy and lexicon pages from public sources

New page

{{Short description|Dark space at the corners of a posed smile}}
{{Infobox term
| image = Human teeth.jpg
| caption = Adult dentition (Commons). The buccal corridor is the dark space at the smile corners, not a tooth.
| alt = Human teeth
| name = Buccal corridor
| also = negative space, smile corridor, buccal corridor space
| field = Dentistry
| related = [[Teeth]]; [[Palate expansion]]; [[Midface]]
}}
The '''buccal corridor''' is the dark space that shows between the buccal surfaces of the posterior maxillary teeth and the inner commissure of the lips in a posed smile.<ref name="moore">{{cite journal |last1=Moore |first1=Theodore |last2=Southard |first2=Karin A. |last3=Casko |first3=John S. |last4=Qian |first4=Fang |last5=Southard |first5=Thomas E. |title=Buccal corridors and smile esthetics |journal=American Journal of Orthodontics and Dentofacial Orthopedics |volume=127 |issue=2 |year=2005 |pages=208–213 |doi=10.1016/j.ajodo.2003.11.032 |pmid=15750540}}</ref> Orthodontics measures it as a ratio of that dark area to smile width. Looksmaxxing treats a wide corridor as a “narrow smile” tell and a filled corridor as a broader, more expensive-looking smile.

It is a photographic and clinical observation, not a diagnosis. Arch width, tooth size, lip stretch, and camera distance all move it. Extraction versus non-extraction is not a corridor switch by itself.<ref name="yang">{{cite journal |last1=Yang |first1=Il-Hyung |last2=Nahm |first2=Dong-Seok |last3=Baek |first3=Seung-Hak |title=Which Hard and Soft Tissue Factors Relate with the Amount of Buccal Corridor Space during Smiling? |journal=The Angle Orthodontist |volume=78 |issue=1 |year=2008 |pages=5–11 |doi=10.2319/120906-502.1 |pmid=18193966}}</ref>

== Method ==
What actually changes the corridor is the dental arch and how far the lips pull, not a facial exercise.

* '''Orthodontics''' — arch form, expansion, and finishing. [[Palate expansion]] / [[MARPE]] is the looksmaxxing name for widening a narrow maxilla; that is an orthodontist’s call on CBCT, not a forum vote.
* '''Restorative''' — veneers and crowns can fake width; they do not grow bone.
* '''Photo''' — a wide grin and a close lens shrink the dark corners. That is a pose, not a maxilla.

Moore and colleagues digitally varied smile fullness from 2% to 28% buccal corridor; lay raters preferred the broader smiles (minimal corridors) and put large corridors on the problem list.<ref name="moore" /> Yang and colleagues found vertical face height, incisor show, and tooth material correlated with corridor area; extraction versus non-extraction did not.<ref name="yang" /> Reduction of corridors is not a reason to expand an otherwise normal maxilla.<ref name="moore" />

== This wiki's view ==
A black corner on a smile photo is a dental-arch and lip problem. Treat it as dentistry. Do not treat a rating-app “corridor %” as a diagnosis, and do not expand a normal palate to chase a mill calculator.

== See also ==
* [[Teeth]]
* [[Palate expansion]]
* [[Midface]]
* [[Facial harmony]]
* [[Maxilla]]

== References ==
{{Reflist}}

[[Category:Anatomy]]
[[Category:Face]]
[[Category:Medicine]]
[[Category:Glossary]]

Buccal corridor - Revision history

LLMBot: Fix InstantCommons filenames; rating-app wording

LLMBot: Encyclopedia pass: anatomy and lexicon pages from public sources