Interview panels and the people who look at your headshot notice how you smile far more than the shade of your teeth. Psychology research on first impressions keeps finding that a relaxed, genuine expression comes across as warm and trustworthy, while there is little good evidence that whiter or straighter teeth on their own change who gets hired. If something about your teeth is holding back your smile, that hesitation is usually the part worth addressing.
People read the expression before they notice the teeth
Studies of smiling tend to measure expression: whether someone smiles, how long, and whether the smile looks felt or posed. A meta-analysis by Gunnery and Ruben (Cognition and Emotion, 2016) pooled research comparing so-called Duchenne smiles, which lift the cheeks and crease the corners of the eyes, with smiles that involve only the mouth. People showing the fuller, genuine version were rated as more authentic, attractive and trustworthy, and the gap was larger in video than in still photographs.
None of those studies tested whether whitening, veneers or orthodontic treatment changes a hiring decision. Photo rating studies do suggest teeth play some part in snap judgements. In one by Gasparello and colleagues (Progress in Orthodontics, 2022), 90 lay raters scored edited photographs of a middle-aged man and woman, and the versions with well-aligned teeth were rated higher for employability, honesty and intelligence than versions edited to show more severe malocclusion. Rating a photograph for a few seconds is a long way from a real interview, though, and we would be overstating the evidence to say that cosmetic dental work improves your job prospects.
More smiling is not always better in an interview
It would be easy to conclude that the answer is to smile as much as possible. A study by Ruben, Hall and Schmid Mast (Journal of Social Psychology, 2015) suggests otherwise. Applicants for a newspaper reporting job who smiled more were rated as less hireable, and hiring scores were highest when people smiled at the start and end of the interview and less through the middle. When observers were told the same applicants were applying for different roles, smiling counted against them most for jobs seen as serious.
In other words, the setting matters. A warm greeting and a genuine smile when you leave suit most interviews. A fixed grin held through every answer can read as nerves.
Nerves often show in the jaw
When people are anxious, many clench their teeth without noticing. A clenched jaw tightens the lower face and can make a smile look held back, both in person and on camera. If you wake with a sore jaw or get tension headaches around stressful events, our article on teeth grinding, clenching and headaches explains what may be going on and when it is worth having it checked.
Another worry that comes up before close conversations is breath. Most persistent bad breath starts in the mouth, from plaque on the tongue and between the teeth or from gum disease, and it is usually manageable once the cause is found. Our guide to bad breath causes and treatment covers the common culprits.
A headshot is a different problem to an interview
A photograph freezes one moment, so small things count for more. Camera distance is one of them. Ward and colleagues (JAMA Facial Plastic Surgery, 2018) used a mathematical model to show that photos taken from close range, like a phone held at arm's length, make the nose look larger than it is. A photographer standing further back with a longer lens gives a more accurate picture of your face, whatever your teeth look like.
Photographers also tend to get better expressions by talking with the person in front of the camera rather than asking for a smile on cue. If you know you freeze when told to smile, mention it. A few practice frames, a relaxed jaw and a breath out just before the shot often help more than anything done to the teeth.
When a dental concern is worth treating anyway
Some people have a specific thing that bothers them every time they see a photo: a chipped front edge, a small gap, or teeth that have yellowed with years of tea and coffee. If it affects how freely you smile in everyday life, it is reasonable to look at it for that reason alone, not because an interview depends on it.
For colour, professional whitening is usually the first thing a dentist will discuss. At Lumi, take-home whitening with custom trays (Lumi Home) is the base option, and Lumi Refresh and Lumi Radiance add an in-chair session to the take-home gels. The results build gradually, they vary from person to person, and no dentist can promise a particular shade. Existing fillings, crowns and veneers do not lighten, so they may stand out afterwards. As a typical market range, dentist-supplied take-home whitening costs about $300 to $700; this is a general guide, not a Lumi fee.
For a chip or a small gap, composite bonding is often an option. Tooth-coloured resin is shaped onto the tooth, usually without drilling healthy enamel, and a small repair can often be done in one appointment. As a typical market range, bonding costs about $250 to $800 per tooth, again not a Lumi fee. Our article on gaps between the front teeth explains when bonding suits a gap and when other treatment may be better.
Any of these needs a check-up first. Whitening is not recommended over untreated decay or gum problems, and a dentist or OHT can tell you whether a mark is staining that whitening can lift or something else.
Plan treatment well before the date
Leave yourself several weeks if you want to change something before a headshot or a round of interviews. That allows time for an examination, any cleaning, a whitening course that builds up gradually, and a review afterwards. Some people notice temporary sensitivity during whitening, which settles more comfortably when the course is not squeezed into the last few days. Bonding is best done after whitening, so the resin can be matched to your new shade.
Common questions
Will whiter teeth help me get the job?
There is no good evidence that they will. Research links genuine, well-timed smiling to warmer first impressions, but it has not shown that tooth colour changes hiring decisions. Whitening is worth considering only if it helps you feel comfortable with your own smile.
Should I show my teeth in a LinkedIn or company headshot?
Either can work. A natural smile, with or without teeth showing, generally looks more approachable than a tense one. Follow any style your employer uses for staff photos, and choose the expression that feels most like you.
Can a chipped tooth be repaired quickly?
A small chip can often be repaired with composite bonding in a single visit, after the dentist has checked the tooth. Larger breaks may need a different approach, which your dentist will explain.
If a chip, a gap or the colour of your teeth makes you hold back when you smile, the team at Lumi Dental in Melrose Park can look at it with you and talk through realistic options. Free consults are available for cosmetic treatment; see our current offers, or read more about composite bonding.
