Black tooth under the filling: the filling has darkened reason

Black tooth under the filling of the patient after dental treatment. This happens not so rarely. And the reasons for the development of this several. In most cases, may be only aesthetic dissatisfaction, but over time, you may receive pain from various stimuli, either spontaneous manifestations, possible long duration of pain. And many people worry about whether it is possible to address this change. Let’s look at the etiological aspects in the progression of the disease and talk about the treatment undertaken by the doctor.

Causes dark color

At some point in their lives, the patient noted that the seal darkened and of course it will begin to worry about the causes of color change. Etiological factors in the development of the transformation of the colors can be several. However, the main points contributing to this or the material for the sealing, or disturbance in the tactics of the physician in the preparation.

Peculiarities in the use of materials

Change the color of the tooth underneath the material indicates the development of secondary caries. Why is the tooth under the filling is black when using the material? The thing is, what is the substance used for restoration work. In the early days of dentistry for the sealing used a variety of cements, amalgam. The view was not aesthetic.

Over time, composites curing. They are easy to apply and consists of two pastes and the adhesive. One pasta base, the other catalytic. After connection of material for the production of material of this group is given a short period of time. On this basis, it is extremely difficult to provide a perfect marginal seal, completing the filling composite chemically cured. In addition, over time there is polymerization shrinkage of the material, which also contributes to the creation of voids between the tooth and fillings.

Modern light-cured composites are much better than chemical. They are easy to use, plastic, time for simulation, it is sufficient to perform the restoration. While filling the substrate is not exposed, it can be instrumental to process, creating the anatomy. The causes that can trigger the development of secondary caries with the use of light composites, due to a violation in the use of technology, or immunity material components. For the production of light seals, it is important to use the technology layering of the composite, the thickness of single deposition and modeling of the tooth must not exceed a thickness of 2 mm. be Sure to use a bond (a special adhesive that secures the seal and the tooth) and blowing out his. Insufficient modeling of the material at the boundary of the tissues leads to defective regional fit. Over time, the microbes from the oral cavity beginning to penetrate through this weakened section of the seal.

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Errors at the stages of preparation

After the doctor diagnosed tooth disease complicated or not complicated by nature, he begins the dissection. The reasons for appearance of black, as a rule, lie in the abandonment of non-viable dentin. This is possible if you use local anesthesia when the patient can not accurately identify the pain when exposed to stimuli. In this embodiment, nekrotizirovannye areas of dentine can be left at the enamel-dentin border (medium decay) or at the bottom of the cavity (deep caries).

The doctor uses a distinctive visual and instrumental characteristics in the process of preparation. Acute process in the tooth looks like a light brown or brown color the tooth, loose. When deletion is observed corresponding to the normal hue within the structure of the tooth in which it is located (enamel — white, dentin is yellowish). The chronic process will be presented with a modified fabric is dark brown, usually dense. However, there are transients in tissue necrosis of a tooth. That is, the fabric may not yet be denoted by variable colors, however, will be filled with microorganisms. In such situations, perhaps leaving the infectious part of the tooth.

In order to eliminate the possibility of error at this level, the doctor uses the «Caries detector». This drug is able to identify the conservation sites are not subject to the tooth and to remove with the help of tip and boron, is connected to the unit.

As well as a doctor may be mistakes in the creation of a cavity under the filling. The cavity must be formed on the basis of class destruction of tooth tissue. The minimum possible dissection. However, in either case, creates a fold at an angle of 45 degrees to the tooth at the level of the enamel. It is necessary to create a complete edge adhesion of the material to the tooth. It is important to consider IOPS (index destruction occlusal surface of the tooth) in the choice of material replenishment. The seal can be placed during IOPS to 55%. If the formulation is to be implemented with higher index, over time, this will contribute to the development of cracks and irregularities in the edge seal material to the tooth.

Other errors that can create a darkened shade of the tooth under the filling is a breach in the cooling of the tooth and the use of drugs. When near the pulp horns and making preparation for the deep cavities, you can create overheating, not using air-water cooling, the burn when you apply drastic solutions, the long exposure of the Etchant containing acid.

The combined effect of the mentioned error will trigger rapid changes in the tooth, shown by change of color under seal.

The symptoms that can mark the patient

As a rule, the patient notices a discrepancy aesthetic fillings currently and previously delivered. And, you may also note the sensitivity of the reception of sweet, hot and cold. Perhaps the development of pain and when podsalivanii air. The pain in these cases can be worn short or lengthy. Short action discomfort after action of the stimulus indicates the development of secondary caries. If the pain is prolonged or aching, this corresponds to originated complicated caries.

The longer the patient will delay the visit to the doctor, the severity of symptoms will be stronger.

What is done in the doctor after diagnosing a darkened color

The doctor at the reception re the patient’s notes that turned black under the established material in the area of the tooth has broken edge seal. If the contact of the seal and the tooth saved, the appearance of secondary caries due to the abandonment of non-viable infected dentine. For further diagnosis the doctor performs the removal of the fillings.

In correlation to the depth of the lesion may be different data of clinical examination. If the tooth is alive, the sensing cavity and air / water impacts from causing soreness. With the development of inflammation of the pulp (pulpitis) sensing the temperature of the sample will cause long-term discomfort. In the case of complete killing of the neurovascular bundle (periodontitis) reaction can give only percussion that tells about the development of inflammation in the periodontal region. The mucous membrane in all types of pathology of the tooth in addition to periodontal disease can be calm.

After diagnosis, the doctor performs a re-treatment in the form of a preparation, medical treatment and the seal. If necessary, the passage channels in complicated forms of caries, endodontic treatment is performed with the imposition of root fillings, with the subsequent restoration or use of prosthetic constructions.

Prevention of change in color of the tooth


What can the patient do to prevent this discomfort? After the sealing, it is recommended the patient not to use food coloring such as wine, coffee, chocolate, black tea for three days. At a painful syndrome you can drink analgesic. However, if subjectively felt uncomfortable phenomena in the oral cavity after three days, aesthetically not yet designated, you should contact a doctor for advice to prevent possible complications.