What Happens If Decayed Teeth Are Not Treated in Children?

What Happens If Cavities in Children Are Left Untreated?

If cavities in children’s teeth are left untreated, initially bacterial infections that occur only on the enamel surface quickly spread to the inner nerves of the tooth, leading to severe abscesses, night pains that disrupt sleep, and focal infections that exhaust the entire digestive system. Furthermore, this inflammatory process permanently damages the underlying permanent tooth buds and disrupts skeletal development.

Neglecting the cavities in milk teeth, based on the assumption that the teeth are temporary, is one of the most devastating clinical scenarios encountered in pediatric dentistry. Tooth decay is not a self-limiting or self-resolving condition; it is a continuously progressing microbial disease that breaks down tissue and spreads to surrounding tissues. A cavity crater in a child’s mouth is not just an aesthetic black spot, but an active infection center that contains millions of bacteria, releasing toxins into the body’s bloodstream. Our clinical observations in İzmir and recent health data demonstrate that a single untreated milk tooth cavity can cause a significant biomechanical decline that can alter the child’s nutrition, psychology, jaw joint, and facial symmetry within months.

What Happens to the Inner Structure of the Tooth When Cavities Are Left Untreated?

When cavities are left untreated, the lactic acid produced by bacteria first penetrates the hard enamel layer and then rapidly erodes the softer dentin tissue, reaching the living nerve and blood vessel chamber (pulp) located at the very center of the tooth. This invasion leads to inflammation of the nerve tissue and eventually causes the death (necrosis) of the tooth’s vitality.

The anatomical structure of milk teeth accelerates this decay process much more than in adult teeth. This is because children’s enamel is thinner and the nerve chambers are much closer to the surface. What appears from the outside as just a small brown spot actually progresses by widening into a funnel shape inside the tooth. When bacteria reach the dentin layer, the child will immediately feel sharp pains when consuming sweet or cold items. However, if a doctor is not consulted at this stage, the bacteria completely occupy the nerve chamber. The nerves expand (become inflamed) to counteract bacterial toxins, creating immense pressure within the closed cavity of the tooth. This pressure causes the child to experience throbbing pain. When the nerve tissue is completely dead, the pain can suddenly cease; however, this is the most dangerous silence indicating that the infection has begun to spread outside the tooth towards the bone.

How Do Untreated Milk Teeth Affect a Child’s Sleep Quality?

Untreated milk teeth cause throbbing night pain by increasing the pressure on inflamed nerves, particularly in a lying position (at night), disrupting the child’s sleep. The decrease in sleep quality leads to a reduction in the growth hormone (GH) released during deep sleep phases, negatively affecting the child’s physical development (growth in height and weight).

One of the most characteristic features of dental pain, medically speaking, is its sudden flare-ups during nighttime sleep. While standing during the day, the blood pressure in the head region is more balanced; however, when the child lies down at night, due to the effect of gravity, blood flow to the head and chin region increases. This extra vascular pressure on already inflamed and irritated dental nerves creates an unbearable pain that causes the child to wake up crying. Sleep is the most crucial process for physical and mental restoration during childhood. A child who suffers from constant toothache, has interrupted sleep, and wakes up crying cannot rejuvenate the immune system and displays an extremely tired, restless, and unresponsive (lack of concentration) mood in the daycare or school environment the next day. In other words, an untreated cavity disrupts not only the child’s mouth but also completely disturbs their 24-hour biorhythm.

How Does an Infected Baby Tooth Damage the Jawbone?

An infected baby tooth damages the jawbone by leaking dead tissue and bacteria from its root tip, forming a pus (abscess) pocket inside the jawbone. This acidic pocket, known as an abscess, eats away at the surrounding bone tissue, leading to bumps in the facial area and holes (fistulas) in the gums that ooze pus.

When the decay in the baby tooth completely destroys its outer structure, the tooth’s root canals turn into a highway for bacteria leading to the jawbone. The body’s defense cells (leukocytes) encounter these bacteria in the jaw bone, initiating a significant biological battle. The resulting inflammatory fluid (pus) builds up pressure inside the bone. Since bone is a hard tissue, the pus seeks an exit and tunnels into the jawbone like acid, ultimately creating a fistula (hole) in the gum that is mistaken for a “pimple” or “sore” and allows pus to flow into the mouth. If the infection tracks through muscle spaces instead of the bone, it can cause severe and dangerous facial swellings (cellulitis) that might require intravenous antibiotic treatment in the hospital.

How Do Permanent Teeth (Underlying Tooth Buds) Get Affected by This Decay?

Permanent teeth are affected by the acidic inflammation pocket formed at the root tip of the baby tooth sitting above them, leaking onto the developing permanent tooth follicle just below. This acidic contact disrupts the mineral formation of the permanent tooth, resulting in the tooth erupting with yellow or brown spots and weak enamel (Turner tooth).

In a child’s mouth, milk teeth and permanent teeth do not occupy separate compartments; they exist within a millimeter of each other. The roots of the milk tooth wrap around the permanent tooth coming up from below like a cage. An infection (abscess) that occurs at the root of the milk tooth directly drains into the developmental sac of the permanent tooth. The enamel of the permanent tooth is being hardened with the calcium crystals formed at that age. However, the acidic nature of the abscess fluid stops the functioning of the cells (ameloblasts) that form the enamel. When the milk tooth falls out and the permanent tooth emerges, parents see deformities, congenital pits, or opaque spots on the newly erupted tooth. An untreated milk tooth decay can silently and irreversibly damage the permanent adult tooth that the child will use throughout life while remaining inside the bone.

How Do Advanced Decays Disrupt a Child’s Nutrition and Digestion?

Advanced decays cause the child to reject hard, fibrous, and protein-rich foods (meat, apple, etc.) during chewing, feeling intense pain, and to turn towards only easily swallowable, mushy carbohydrates. Swallowing foods whole without chewing increases the workload of the stomach, leading to indigestion and digestive problems.

The digestive process does not only start in the stomach but also begins with the physical breakdown of food by the teeth in the mouth and the chemical disintegration by enzymes in the saliva. If a child has broad craters on their back molars, every morsel touching that area causes pain. To avoid this pain, the child instinctively develops a defense mechanism: they swallow food whole after turning it in their mouth a few times without chewing. Because they cannot chew fibrous foods, they completely eliminate the intake of vegetables and meats. They typically try to fill up only on soft foods like pasta, soup, or milk. This monotonous and insufficient diet disrupts the child’s iron, vitamin, and protein intake. The foods that are swallowed whole cannot be fully digested in the stomach, leading to gas accumulation, reflux, and a disruption in intestinal regularity, consequently turning a dental problem into a broad-scale digestive and developmental issue.

How Do Teeth Extracted Early from the Back Affect Jaw Development?

Teeth extracted early from the back lead to the narrowing of the jaw development by causing the teeth in front and behind the gap to tilt into that area, gradually closing the jaw arch millimeter by millimeter. This situation leads to the loss of the space necessary for the eruption of the underlying permanent tooth and causes the tooth to remain buried within the bone.

In dentistry, milk teeth are not only considered as tools for chewing, but also regarded as “natural space maintainers.” Each milk tooth preserves the area allocated for it to ensure that the underlying permanent tooth can emerge at the right time and angle. If decay progresses to a point where treatment is no longer possible and the tooth must be extracted, a serious biomechanical collapse begins in that area. The teeth within the bone are constantly inclined towards shifting forward and leaning on each other. The gap created by the extraction of a molar tooth at the age of 5 is completely closed within a few years due to the inclination of the neighboring teeth. The primary small molar that attempts to erupt at the age of 11 may either erupt in a tilting manner (impacted) due to the lack of space above it, or it may remain completely trapped within the bone (it stays buried). Avoiding extraction by opting for simple decay treatments will result in expensive and prolonged orthodontic wire treatments during adolescence.

How Do Facial Asymmetry and Jaw Joint Problems Start with Tooth Decays?

Facial asymmetry and jaw joint problems begin when a child starts chewing food persistently on the healthy side of their mouth to avoid feeling pain on the decayed side. This unilateral usage (unilateral mastication) leads to disproportionate development of the jaw muscles, swelling on the working side, and uneven loading on the jaw joint (TMJ).

For the jaw and facial skeleton to grow healthily and symmetrically, it is essential that the right and left chewing muscles (masseter muscles) work equally to exert balanced mechanical pressure on the bone. However, a child with a deep cavity on the right side constantly uses the left side while eating. The working left muscles gradually thicken, gain volume, and the jawbone in that area develops outward; the unused right side, on the other hand, remains weak (atrophic). This one-sided function that persists for several years causes the jaw to appear asymmetrically shifted to one side when viewed from the front. Additionally, the uneven load on the temporomandibular joint (TMJ) that connects the lower jaw to the skull leads to wear on the joint disc, causing clicking sounds when opening and closing the jaw in later years and setting the stage for chronic head/neck pain.

How Do Dental Deficiencies Hinder a Child’s Speech (Articulation) Development?

Dental deficiencies, especially the loss of upper front teeth due to bottle feeding, prevent the tongue from finding a mechanical barrier when producing phonetic sounds (s, f, v, t, z), thereby hindering speech (articulation) development. This leads to a persistent lisp as the tongue extends beyond the created space.

In human anatomy, the act of speaking is produced by directing air from the vocal cords properly between the lips, palate, and teeth. The preschool period (ages 3-5) is a critical stage where children rapidly learn their language skills, words, and pronunciations. If a child has completely lost their front teeth due to decay or if the teeth have only remained as small brown roots, they cannot find a physical wall against which to rest their tongue while speaking. Air escapes uncontrollably for letters that need to be pronounced by filtering through the teeth. Initially, this condition may appear as a cute speech defect, but since the teeth have not grown back for many years, it may settle into the child’s speech pattern. Even if permanent teeth come in, the habit of incorrect tongue positioning may persist, potentially leading to a chronic phonetic disorder (articulation problem) that requires speech therapy.

What Are the Effects of Aesthetic Losses on Child Psychology?

The effects of aesthetic losses on child psychology manifest as a child hesitating to smile due to blackness and decay in the front teeth, covering their mouth with their hand while speaking, and experiencing a lack of self-confidence as a result of fearing teasing (peer bullying) by their friends, leading to social isolation.

Adults often think that children do not care about their physical appearances or do not look in the mirror. However, developmental psychology shows that especially during preschool and early school years (the stage where socialization begins), children are extremely sensitive to their body image. A child with noticeable brown stains on their teeth, or broken teeth, may stand out among peer groups due to these differences, and unfortunately, this can lead to children being unkind about those differences. A child aware of how their teeth look may refuse to smile when having a picture taken, trying to hide their teeth by pulling their upper lip down. This constant effort to hide can lead to introversion (social phobia) and feelings of inadequacy in the child’s character development. However, treating teeth with biocompatible white coatings (like zirconium) can restore the lost confidence and joy to a child’s face in just one session.

How Untreated Cavities Weaken the Body’s Immune System?

Untreated cavities harbor a continuously active infection site that produces bacteria and acid in the oral flora, weakening the immune system. The body’s white blood cells (defense cells) use energy 24/7 to fight this localized infection, and this situation decreases the overall body resistance, leaving the child defenseless against other diseases.

In health sciences, the mouth is not an isolated area disconnected from the general system of the body; rather, it is the main gateway directly linked to the circulatory and digestive systems. A child with five or six deep cavities in their mouth is constantly in a battle with bacteria (Streptococcus mutans) that try to penetrate these cavities into the circulatory system. An inflamed tooth root behaves like an open wound in the body. The immune system enters a state of alarm and expends all its energy to limit this area. This chronic (long-term) stress condition exhausts the capacity of the immune system. As a result, these children are much more vulnerable to simple viral infections (such as flu and tonsillitis) they encounter in preschool environments and get sick much more frequently compared to other children. Treating the cavities and sterilizing the environment instantly removes this chronic burden on the child’s overall health.

How Are Advanced Cavities Diagnosed in İzmir Avrupadent Clinics?

In İzmir Avrupadent clinics, advanced cavities are diagnosed using a combination of clinical visual examination and low-radiation digital panoramic and bite-wing X-rays. This radiological analysis objectively maps not only the size of the cavity on the tooth enamel but also how far it has spread into the root canals and within the jawbone (to the permanent tooth).

Evaluating advanced stages of decay solely through visual inspection treats only the observable areas of the tooth. The doctor can see if the tooth is broken or has turned black from the outside; however, the crucial question is how deep the infection has penetrated into the bone and whether it has reached the underlying permanent tooth follicle. In modern pediatric diagnostic procedures implemented in İzmir, radiographic imaging that causes no pain to the child is a standard procedure. In the digital image projected on the screen, dark abscess cavities within the bone, melting root structures, and the developmental stage of the permanent tooth are measured in millimeters. This transparent evaluation method is the most scientific and indisputable basis for answering the question, ‘Can this tooth be saved with a filling, or should a root canal be performed, or should it be extracted urgently?’

What Systemic Risks Does Infection in the Blood Carry (Focal Infection)?

The infection of the bloodstream (focal infection) occurs when bacteria from the tooth root enter the bloodstream through chewing pressure and settle in distant organs such as heart valves, kidneys, and joints, posing vital risks, especially in children with systemic diseases (e.g., endocarditis, nephritis), as it threatens the entire body.

In a very deep cavity, the inflammation collected at the root tip is under a closed pressure. Every time the child eats, the force applied to the tooth works like a pump, pushing the bacteria and toxins they produce into the general bloodstream through microvessels (bacteremia). This condition, referred to in medical terms as “Focal Infection,” means that the microbe at the tooth root travels through the bloodstream and adheres to a weak organ in the body. The immune system of healthy children can usually eliminate these circulating bacteria in the blood. However, in children with heart murmurs, congenital heart valve disorders, or kidney problems, these bacteria can directly settle in those organs, leading to life-threatening infections (for example, Infective Endocarditis). Therefore, medical boards stipulate that cavities in children at risk of focal infection must be urgently and definitively eliminated.

How Are Cavities Prevented in the Context of Pediatric Dentistry (Pedodontics)?

In the context of Pediatric Dentistry (Pedodontics), cavities can be chemically frozen with fluoride varnishes when they are in the initial stage (white spot phase); in the stage where it has penetrated the enamel, the cavity tissue is carefully cleaned and physically repaired with biocompatible materials (fillings or crowns), thus preventing the infection from reaching the tooth nerves and spreading to the bone.

The main philosophy of the discipline of pedodontics is not to extract teeth, but to maintain them healthily in the mouth. When diseases are caught early, treatments are carried out within a very protective (minimally invasive) framework. If a cavity has formed but has not reached the nerve, the dentist only removes the affected black tissue with special instruments and places aesthetic fillings that are compatible with the tooth (feeding the tooth by releasing fluoride) into the resulting defect. If the cavity has enlarged significantly but extraction is not necessary, pediatric crowns are applied, which encase the tooth like armor. These medical restorations ensure that the tooth regains its chewing function while also guaranteeing the mechanical space-maintaining function of the underlying permanent tooth in the jawbone. All these procedures are performed with a clinical approach that is tailored to the child’s age level, gamified, and comfortable.

Why Delaying a Visit to the Doctor Despite Deep Cavities is a Medical Mistake?

Delaying a visit to the doctor with thoughts such as “the child is afraid” or “the pain has passed” despite deep cavities means allowing the infection to spread outside the tooth, causing permanent destruction to the jawbone and surrounding tissues, making it a significant medical mistake. A simple filling treatment that is postponed can turn into much more complex surgical procedures.

The most common mistake parents make during childhood is canceling an appointment for Pediatric Dentistry (Pedodontics) by thinking that the child’s pain has subsided. An abrupt stop in pain after severe toothache does not mean that the decay has stopped; rather, it is evidence that the nerve inside the tooth (the tissue that transmits pain) has completely died (necrosis). The tooth that has lost its sensation has now become a breeding ground for bacteria and insidiously spreads to the jawbone without showing any signs of infection. Parents can only notice this condition when the child’s cheek swells like a drum. A tooth that could have been saved with a simple 15-minute filling just a few months ago can become irreparable due to delay, leading to the necessity of extracting the tooth and making space maintainers, resulting in a much more exhausting treatment process for the child.