Our teeth are an active part of our digestive system. Teeth dissolve foods before you swallow. On average, most adults have 32 teeth, although some adults have more or less teeth. Enamel is primary protective part of your teeth. Within the human body, enamel is the toughest substance.
Understanding the different parts of your teeth is important for maintaining good oral hygiene and for preventing severe dental disease. Regular dental care and proper oral hygiene practices are essential to keep your teeth healthy and functioning properly.
What are teeth?
Teeth are hard, calcified structures found in the mouths of vertebrates. Adult teeth are also known as permanent teeth. They are primarily used for biting, chewing, and grinding food. The main function of teeth is to break down food into smaller pieces, making it easier to swallow and digest.
How many teeth do we have?
Permanent adult teeth on average consist of 32 teeth. The 32 teeth are made up of incisor teeth, canine teeth, premolars, molars, and wisdom teeth. If your wisdom teeth have been removed, you will probably have 28 teeth.
How many roots does each tooth have?
Each tooth has a different number of roots. Typically incisor, canine and premolar teeth will have one root whereas molar teeth will have two or three.
What are teeth made of?
- Tooth Enamel
- Tooth Dentin
- Tooth Pulp
- Tooth Root
- Tooth Cementum
- Periodontal Ligament
- Tooth Crown
Enamel:
Enamel is the outermost layer of your teeth and is the hardest and most mineralized substance in the human body. It provides protection and acts as a barrier against decay and damage.
Dentin:
Dentin is the layer beneath the enamel and makes up the bulk of the tooth’s structure. It is a hard tissue but not as hard as enamel. Dentin contains tiny tubules that transmit sensations like temperature and pain to the nerve in the pulp.
Pulp:
The pulp is the innermost part of the tooth, located at the center. It contains blood vessels, nerves, and connective tissues. The pulp is responsible for nourishing the tooth and transmitting sensory information, such as pain and temperature sensitivity.
Root:
The root of a tooth extends below the gumline and anchors the tooth in the jawbone. Teeth can have one or more roots depending on their type. Molars typically have more roots than front teeth, for example.
Cementum:
Cementum is a calcified tissue that covers the tooth’s roots. It helps anchor the tooth within the jawbone by attaching to the periodontal ligament, which connects the tooth to the bone.
Periodontal Ligament:
The periodontal ligament is a group of fibers that attach the cementum to the jawbone. It provides support and allows the tooth to absorb the forces exerted during chewing.
Crown:
The crown is the visible part of the tooth that is above the gumline. It’s the part of the tooth that you see when you smile, and it is covered by enamel.
Tooth Hygiene & Care
Teeth hygiene and care are essential for several reasons:
Prevention of Dental Problems: Good dental hygiene helps prevent common dental problems such as cavities (dental caries), gum disease, and bad breath (halitosis). Regular brushing and flossing remove plaque and food particles that can lead to tooth decay and gum disease if left untreated.
Maintenance of Oral Health: Proper dental care promotes overall oral health by keeping the teeth and gums clean and healthy. This reduces the risk of developing oral health issues and helps maintain the function of the teeth for chewing and speaking.
Prevention of Tooth Loss: Dental hygiene plays a crucial role in preventing tooth loss. Gum disease, which is often caused by poor oral hygiene, is a leading cause of tooth loss in adults. By maintaining good dental hygiene practices, you can reduce the risk of gum disease and preserve their natural teeth for as long as possible.
Enhancement of Aesthetic Appearance: Good dental hygiene contributes to a pleasing smile and overall facial appearance. Clean, healthy teeth and gums can boost self-confidence and improve social interactions.
Overall, teeth hygiene and care are crucial for maintaining oral health, preventing dental problems, preserving natural teeth, and promoting overall well-being. By incorporating good dental hygiene practices into their daily routine and seeking regular dental care, you can enjoy the benefits of a healthy smile and improved quality of life.
Types of Adult Teeth
Adults have four types of teeth, each serving different functions in the chewing and digestion process. These types of teeth are:
Incisors: Incisors are the eight front teeth located in the upper and lower jaw. There are four incisors in each jaw, two central incisors, and two lateral incisors. Incisors are sharp-edged teeth used for cutting and biting into food. They play a crucial role in the initial stages of the chewing process.
Canines: Canines, also known as cuspids, are the four pointed teeth located next to the incisors, two in the upper jaw and two in the lower jaw. Canines have a pointed shape and are used for tearing and shredding food. They are particularly effective for ripping into tougher foods.
Premolars: Premolars, also called bicuspids, are the eight teeth located behind the canines, two in each quadrant of the mouth (upper and lower jaw on both sides). Premolars have flat surfaces with two or more cusps and are used for grinding and crushing food. They have a more complex structure compared to incisors and canines.
Molars: Molars are the twelve teeth located at the back of the mouth, three in each quadrant (upper and lower jaw on both sides). They are the largest and strongest teeth in the mouth, with broad, flat surfaces covered in multiple cusps. Molars are primarily responsible for grinding and chewing food into smaller pieces before swallowing.
These four types of teeth work together to facilitate the chewing and digestion process, enabling the breakdown of food into smaller, more manageable pieces for digestion and nutrient absorption. Each type of tooth is specialized for a specific function, contributing to overall oral health and proper functioning of the digestive system.
Common Teeth Problems and What Causes Them
Even with good oral hygiene habits, teeth are vulnerable to a range of problems that develop over time. Understanding the most common issues — and their causes — can help you catch problems early and seek treatment before they become serious.
Cavities (Tooth Decay). Cavities are the most widespread dental problem affecting both children and adults. They form when bacteria in the mouth feed on sugars and produce acids that eat through enamel and into the deeper layers of the tooth. Left untreated, cavities progress from a minor filling into a root canal or extraction.
Enamel Erosion. Enamel erosion occurs when the outer protective layer of your tooth is worn away by acid — from diet, acid reflux, or dry mouth. Unlike cavities, which are localized, erosion tends to affect broad surfaces of the teeth and can cause widespread sensitivity and discoloration. Once enamel is lost, it cannot grow back.
Cracked or Chipped Teeth. Teeth can crack from trauma, biting down on hard foods, teeth grinding, or simply from age-related wear. Cracks range from minor surface chips to deep fractures that extend into the root. Even a small crack can allow bacteria to enter the tooth and cause infection if left untreated.
Gum Disease. Gum disease begins as gingivitis — inflammation of the gum tissue caused by plaque buildup along the gumline — and can progress to periodontitis, a more serious infection that damages the bone supporting your teeth. Gum disease is one of the leading causes of tooth loss in adults and has been linked to systemic health conditions including heart disease and diabetes.
Tooth Sensitivity. Sensitivity to hot, cold, or sweet foods is often a sign that enamel has thinned or that gum recession has exposed the sensitive root surface. While sensitivity itself isn’t always an emergency, it is frequently a signal that something needs attention.
Tooth Grinding (Bruxism). Many people grind or clench their teeth without realizing it, often during sleep. Over time, bruxism wears down enamel, causes jaw pain, and can lead to cracked or flattened teeth.
If you’re experiencing any of these issues, seeing a dentist early can prevent a minor problem from becoming a major one. Dr. Ali Shmara, the best dentist in Riverside, provides comprehensive diagnosis and treatment for all common tooth problems at his Riverside dental office — from simple fillings to full smile restorations.
How Professional Dental Care Protects Your Teeth
Home hygiene is the foundation of good oral health, but it only goes so far. Professional dental care fills the gaps that brushing and flossing alone simply cannot address — and it plays a critical role in catching problems before they become painful or expensive.
Professional Cleanings. Even the most diligent brushers develop tartar — hardened plaque that cannot be removed with a toothbrush. Professional cleanings remove tartar buildup from areas that are difficult to reach at home, particularly below the gumline. Most patients benefit from cleanings every six months, though those with a history of gum disease may need them more frequently.
Dental X-Rays. X-rays allow your dentist to see what’s happening beneath the surface — cavities forming between teeth, bone loss around roots, impacted teeth, and early signs of infection that are completely invisible to the naked eye. Catching these issues early dramatically reduces the complexity and cost of treatment.
Oral Cancer Screenings. Routine dental checkups include a visual and physical screening for oral cancer — a disease that is highly treatable when caught early but often goes undetected until it has advanced. Your dentist is frequently the first healthcare provider to identify suspicious tissue changes.
Fluoride Treatments. Professional fluoride applications deliver a concentrated dose of remineralizing fluoride directly to the enamel surface — far more effective than fluoride toothpaste alone. These treatments are especially valuable for patients at higher risk of decay, including children, those with dry mouth, and anyone with a history of frequent cavities.
Personalized Guidance. Perhaps most importantly, a professional dental visit gives you access to personalized advice based on your specific oral health situation. Your dentist can identify patterns — like wear from grinding, early signs of gum recession, or dietary acid erosion — and help you address them before they escalate.
Professional dental care from a qualified Riverside dentist goes far beyond what brushing and flossing alone can achieve. Dr. Ali Shmara, recognized as one of the best dentists in Riverside, CA, provides comprehensive preventive care designed to protect your teeth for life — combining clinical expertise with a genuine commitment to patient education and comfort.
When to See a Dentist About Your Teeth
Many dental problems develop gradually and don’t cause significant pain until they’ve already progressed. Knowing the warning signs — and acting on them promptly — can be the difference between a simple treatment and an extensive one.
See a dentist promptly if you notice any of the following:
Tooth pain or persistent aching. Pain is your body’s signal that something is wrong. Whether it’s a sharp pain when biting, a dull throb, or sensitivity that lingers after eating or drinking, any persistent tooth pain warrants a professional evaluation.
Sensitivity to hot, cold, or sweet. Occasional sensitivity is common, but sensitivity that is new, worsening, or affecting multiple teeth can indicate enamel erosion, a crack, gum recession, or early decay.
Visible discoloration or white spots. Dark spots on a tooth can indicate decay, while chalky white spots are an early sign of demineralization. Both should be evaluated before they progress.
Bleeding or swollen gums. Gums that bleed during brushing or flossing, or that appear red, puffy, or receding, are a classic sign of gum disease. Early-stage gum disease (gingivitis) is fully reversible with professional treatment — advanced gum disease is not.
A loose tooth. Adult teeth should never be loose. Looseness in a permanent tooth indicates significant bone loss around the root and requires immediate attention.
Jaw pain, clicking, or difficulty opening your mouth. These symptoms can indicate teeth grinding, a bite problem, or a temporomandibular joint (TMJ) disorder — all of which a dentist can evaluate and treat.
A cracked, chipped, or broken tooth. Even if it doesn’t hurt, a compromised tooth is vulnerable to decay and infection. Treatment is almost always simpler when a crack is addressed early.
Bad breath that doesn’t resolve with brushing. Chronic bad breath (halitosis) is often a sign of gum disease, infection, or decay — not just a hygiene issue.
Don’t ignore the warning signs. Schedule an appointment with Dr. Shmara, Riverside’s top-rated dentist, to get a thorough evaluation and the peace of mind that comes with knowing your teeth are in good hands.
Protect Your Teeth With the Best Dentist in Riverside
Your teeth are one of your most important assets — essential for eating, speaking, and presenting yourself to the world with confidence. Protecting them starts with understanding how they work, recognizing the early signs of problems, and partnering with a dental team you can trust.
At Riverside Cosmetic Dentist, Dr. Ali Shmara provides comprehensive general and cosmetic dental care for patients of all ages throughout Riverside and the surrounding communities of Corona, Moreno Valley, Jurupa Valley, and the greater Inland Empire. Whether you’re due for a routine cleaning, concerned about a specific symptom, or ready to transform your smile, our team is here to help.
Call us at (951) 352-2227 or visit our contact page to request an appointment. We look forward to being your dental home.