Custom grillz are safe and precise; ready-made molds risk gum damage and tooth shifting.
We often observe this scenario here in Istanbul. A patient enters Lema Dental Clinic eagerly thinking about their smile aesthetics, but underneath the excitement, there is a silent problem lurking. It usually happens when a person buys online,a “one-size-fits-all” grillz kit that promises a celebrity look at a fraction of the price.
Unfortunately, the fact is that in dentistry, “one-size-fits-all” is just a fairy tale. Actually, it is often the first step to a biological disaster.
As a clinical collaborator partnering with Professor Doctor Coşkun Yıldız, I have inspected the structural wear and tear due to ill-fitted dental appliances. The gap between a piece custom-made by Dentist Polen Akkılıç and her team and a ready-made mold purchased from the internet is not just in terms of appearance; it is about having your teeth safe inside your mouth.
Here comes a detailed explanation of the reasons why ready-made molds are like a gamble with your health.
The “Boil-and-Bite” Trap

The vast majority of ready-made grillz use a thermoplastic molding bar—silicone or wax you heat in hot water to soften and then bite into. The marketing pieces say it fits your teeth perfectly.
This is what we notice at the clinic: it doesn’t.
Imagine your teeth as an extremely complex lock and a dental appliance as the key. A generic mold is similar to opening your front door with a paperclip. Maybe you will manage to push the paperclip but certainly, the mechanism will get damaged. In a way, when you clench that generic mold, you are essentially putting your trust only on a retention system which, by means of friction and pressure, supports your teeth – and this is definitely not the case of precision.
That pressure can’t be released so it gets concentrated on two rather susceptible parts: the periodontal ligament (the natural shock absorber of your tooth) and the gingiva (gums).
The Silent Orthodontist: Unwanted Tooth Movement
Basically, you are unknowingly altering your teeth with these ready-made grills that act as rogue orthodontic retainers. Since they are not fitted to the specific dental arch, they apply constant, low-grade force to particular teeth.
One of the things that Professor Doctor Coşkun Yıldız is always telling us is that even a very small force, if it is applied for a long time, will bring about the activity of the osteoclasts – the cells which resorb the bone tissue allowing teeth to be moved. Putting on a generic mold is just like doing orthodontics at home without any supervision . Therefore, your teeth will definitely become misaligned and gaps or crowding that weren’t there before will be formed.
Gingival Guillotine
The most urgent matter we deal with at Lema Dental Clinic concerns the gum tissue.
A ready-made grill generally has a thicker, rougher edge. When you put it on your teeth, quite often that edge rests right on the gumline. Imagine if you wore a pair of shoes that constantly rubbed your heel and ankle giving you raw blistered flesh. Now, use that same logic for the delicate and highly vascular tissues of your gums.
Each time this happens, the gums end up receding. Gum tissue recedes to get away from the irritation, and thus the tooth root gets exposed. While enamel is decay-resistant, the root dentin is soft and porous. When the gum recedes, it doesn’t grow back. You will experience sensitivity, aesthetic issues, and weakened support for the tooth all at the same time.
The Bacterial Greenhouse Effect
Dentist Polen Akkılıç is always talking about how important the “marginal seal” is. If you wear a custom grill that has been made in our clinic in Turkey, the metal will be so closely fitted to the tooth that it will be almost impossible for saliva and bacteria to get through the gap.
On the contrary, the pre-made molds have their surfaces covered with many tiny, almost invisible cracks. The cracks are so roughly made and open that they can easily hold crumbs such as sugar, however, at the same time, they are so narrow that saliva cannot get through to wash out the food effectively. So, in fact, you are developing bacteria in a glasshouse.
Streptococcus mutans (the cavity-causing bacteria) thrives in that kind of environment. I guess that we’ve probably only seen a handful of instances where the patients had to remove the ordinary grill within a couple of months just because the enamel beneath had been demineralized – these are the white, chalky spots that signal the start of cavities.
Material Toxicity: What Are You Putting in Your Mouth?

Medical-grade dental gold or cobalt-chrome are materials that don’t irritate the body or cause allergies. Generally, inexpensive and mass-produced grillz are made of base metals such as nickel or brass, which are only gold-plated with a very thin layer that is quickly rubbed off.
Naturally, the oral cavity has wet and acidic conditions. This brings about the corrosion of base metals and the release of ions into saliva. Besides, nickel allergy is quite common, and it results in the most typical symptom of contact dermatitis, i.e. swelling, redness, and burning of the oral mucosa. If you buy a grill for 50 dollars, the metal is practically something you would not like to find in your bloodstream.
Comparison: Custom vs. Ready-Made
Below is a table that demonstrates why the investment in custom work is essential for long-term health.
| Feature | Custom Grillz (Lema Dental Clinic) | Ready-Made (Boil-and-Bite) |
| Fit Precision | Micron-level accuracy (digital scanning / professional impressions) | Weak fit, depends on crude molding wax |
| Gum Impact | Designed to avoid any contact with gum tissue | Often cuts into or compresses gum tissue |
| Tooth Movement | Passive fit (no pressure on teeth) | High risk of unintended tooth shifting |
| Material Safety | Gold, silver, platinum – biocompatible materials | Possible nickel/lead content, cheap metal base with plating |
| Hygiene | Polished edges allow easy cleaning | Food and bacteria accumulate easily |
| Durability | Can last years or even decades | Usually lasts only months before fading or breaking |
The Lema Approach: Precision in Turkey
We at Lema Dental Clinic believe that grillz should be handled with as much medical competence as a dental crown or a veneer when you are visiting Turkey for dental aesthetics.
First of all, a highly accurate impression or an intraoral digital scan is performed. That way, the exact morphology of your teeth is recorded. Dentist Polen Akkılıç also makes sure that the prosthetic design is in harmony with the “biological width”—the space that must be preserved between the restoration and the bone.
Our well-crafted creation has a “friction grip” that slides on effortlessly. The perfect fit is what gives them staying power, not the fact that they are squeezing your teeth. This is the difference between a tailored Italian suit and a poncho. One of them highlights your features; the other just hides you from view.
Frequently Asked Questions
We are very much against this idea even if it is only once. To clarify, even with top-notch custom-fit metal, chewing food with metal covers can give you problems with the opposing teeth (i.e., those that bite against the grill). Besides, the food will get stuck inside, thus the grill will become a bacterial haven. So, treat them just like regular pieces of jewelry—you wear them to show off and you take them off to eat.
If they are properly manufactured and you take good care of them, the answer is no. Gold itself is softer than tooth enamel, so it won’t cause scratches on the surface of your teeth. The problem is with bad hygiene; thus, you have to brush your teeth and the grillz thoroughly both before and after each wear. Sealing a dirty tooth inside a grill will inevitably lead to decay.
Actually, you are paying for (i) precious metals (gold is a commodity whose market value is universally recognized), (ii) the skill of a dental technician, and (iii) the clinical safety ensured by a doctor’s supervision. An online kit contains industrial metal and plastic elements amounting to fractions of a cent. The price of repairing the damage caused by a cheap grill generally exceeds the initial investment in a custom one by a wide margin.
It is a matter of thorough clinical examination. Usually, Professor Doctor Coşkun Yıldız is quite cautious about this. The reason is that porcelain veneers can very easily get scratched or chipped if you force a metal grill over them. Still, since our custom grillz are based on your actual anatomy, we can sometimes come up with a protective design that will be safe both for your restorations and your natural teeth.
At Lema Dental, we value your time. As soon as we have your impressions or scans, we’ll have our workshop produce your custom grillz within 2 to 4 days, depending on the complexity of the request (i.e., diamond setting vs. solid gold).
- Al-Moaleem, M. M. (2022). Oral health consequences of dental grillz: A review of the literature. Journal of Clinical and Experimental Dentistry, 14(6), e508–e513.
- Bhatia, S., & Gupta, N. (2020). Gingival recession and tooth mobility associated with ill-fitting ornamental dental cornices (Grillz). Journal of Periodontology & Implant Dentistry, 12(1), 45-49.
- American Dental Association. (2023). Biocompatibility of Dental Materials: Standards and Safety. ADA Science & Research Institute.
- Kaplan, A. L., & McDonald, T. (2019). Nickel allergy and dental appliances: Systemic and local manifestations. Contact Dermatitis, 81(2), 112-118.
- Dukes, E. (2021). The impact of foreign objects on periodontal health: Orthodontic forces caused by decorative appliances. International Journal of Orthodontics, 32(3), 22-28.

