The picture is taken quite close, so the image can be distorted. 1- Teeth often look more protruding than they are in real life and appear goofy. As teeth are at the centre of the image, people are increasingly, and understandably, driven to make them look nicer.
The mouth contains a lot of red/magenta due to the gingiva. If set on auto white balance, the camera will compensate for these colors and mistake them for a color cast induced by a warm light. This compensation is what makes teeth appear blue or even more white than they are in real life.
Firstly, the angle is different between the one you look at mirror and the one you take selfie. Secondly, when you look at mirror, the light might be brighter.
Unfortunately, sometimes cameras capture colors incorrectly, causing your teeth to look more yellow than they are. If your teeth look yellow or dull in photos, you may hesitate to share them with others. Thankfully, you can whiten teeth in photos with editing software.
Now this yellow dentin layer shows through the enamel for almost everyone, but for some, the enamel layer could be thinner or more translucent causing the yellow to appear slightly more. So your yellow teeth, due to genetics could be absolutely normal.
This is because as the enamel surface of teeth wears with age, the dentin layer moves closer to the outer surface. As a result, the thinner, translucent layers of enamel display more of the natural color of dentin. The result is a decidedly more “yellow” appearance.
In most cases, yellow teeth are considered unattractive and, at times, can be mistaken for poor oral hygiene.
Teeth look yellow when the enamel is thin and the dentin underneath shows through it. Dentin is a deep yellow to brownish material inside your teeth under the enamel, and it's often responsible for the yellow you see when you look in the mirror.
In our modern day of internet dating and blind date setups, first impressions can be a big, big deal. That said, few people include “canary yellow teeth” on their list of turn-ons. In fact, both men and women commonly find yellow teeth a turn-off at best and a deal breaker at worst.
Summary. Mirror images provide a more accurate perception of self due to the mere exposure effect, while camera images show how others see us. Selfies offer a unique perspective but can be distorted and less accurate than mirror selfies.
The closer the camera is to our face, the more distorted our appearance can appear, which can be unflattering. The angle of the camera can also affect the way our facial features appear, which can make us look different than we do in the mirror.
When enamel wears away, or if it never forms properly, the teeth can take on a dull, translucent, or waxy appearance. This means that if your teeth are starting to look transparent, your enamel around the edges of your teeth where dentin does not extend is worn.
Crooked teeth can be genetic. Crowding, jaw size, jaw shape, having too many teeth (hyperdontia), overbites, underbites, and poor tooth or palate development are some of the conditions that can be passed down in your family.
The dehydrating effect, pulling water out of your enamel, makes teeth appear whiter, but this goes away within an hour after rehydrating the teeth. So how teeth rehydrate? Well, any time you close your mouth and let your saliva touch them.
Even with daily brushing, certain foods and drinks can cause stained teeth. For example, frequently drinking coffee, tea and wine can all lead to yellow teeth. In addition, even regular brushing cannot always combat yellow teeth caused by smoking cigarettes.
If your child is about 6-7 years old and their permanent teeth have started to erupt, you may notice that their permanent teeth look quite a bit more yellow than their baby teeth. Good news: this is normal.
There are a number of ways that you can whiten your teeth if they are or have already yellowed; these are a mix of over-the-counter toothpastes, home whitening products or, in some cases, mechanical plaque removal by a dentist or hygienist.
Natural Enamel Thickness & Translucency
However, the underlying dentin layer has a slightly yellowish color. This yellowish hue shows through the enamel in almost everyone, but more so for those with naturally thinner or more translucent enamel. So your yellow teeth may be perfectly normal due to your genetics!
Non-White or Yellow Teeth are Unhealthy
Teeth whitening treatments usually work by stripping or entering the outer enamel layer, which makes teeth weaker if done many times. So, more often than not, yellow teeth are actually stronger than pearly white ones–so long as they're cleaned regularly.
If left untreated, stained teeth can become more obvious over the years. Teeth also can start appearing more yellow as a natural part of the aging process. As you age, your tooth enamel can become thinner, allowing yellow dentin to show through.
Smiling can be challenging because it requires you to relax your face muscles and hold your mouth in a specific position. However, when you're tense, it isn't always easy. Practicing smiling before getting your picture taken helps – being relaxed makes smiling easier and more natural. Practice, and it will get easier.
The Complex Smile
This smile is rare because it requires three muscle groups to work simultaneously when smiling. If you have this smile, the two muscles used in the cuspid and commissure and the lower lip will pull downward, resulting in a double chevron shape.
Don't Focus on the Camera
Instead, distract yourself before the photographer takes your picture. Try looking around in different directions, making noises with your mouth, or anything you can to distract yourself. That way when it comes time for you to smile, it will look more natural and relaxed.