Gray Hard Object Behind Molar: Possible Dental Issues Explained - Dentistry

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A gray, hard object has appeared behind the molars?


Hello Doctor: Over the past couple of days, I noticed a gray, hard area behind the last molar on the lower right side of my mouth, which seems to be in the gum area.
When I pull my cheek outward, I can clearly see the blind spot behind the molar, and there is a small black dot on top, which appears to be a cavity.
The gray hard substance is located on the occlusal surface.
A few days ago, food debris got stuck between this molar and the adjacent tooth after a meal, and since I didn't remove it immediately, I experienced significant discomfort a few hours later, with noticeable gum redness and swelling.
I quickly used dental floss and a water flosser to clean it, but there has still been some mild redness and swelling recently.
Using the water flosser causes slight pain, and I'm wondering if this could be related to the gray area that appears to be a lesion behind the molar.
Currently, I do not feel any pain at all, even when brushing or using the water flosser in that area; I only have a slight foreign body sensation (perhaps because I am particularly concerned after seeing it).
I would like to ask what that gray hard substance could be.
Could it be due to gum or periodontal recession exposing the mandible? Or could it possibly be an impacted tooth that has emerged? Or is it just calculus in the blind spot? Additionally, I would like to know if gum or periodontal recession that exposes the mandible or alveolar bone always presents with pain.
If part of an impacted tooth is exposed and has a cavity, does it always cause pain? I have already made an appointment with a dentist, but I am still very worried, so I wanted to ask these questions first.
Thank you, Doctor, for taking the time to clarify and respond.
I greatly appreciate it.

Leo, 20~29 year old female. Ask Date: 2022/05/19

Dr. Zeng Guanghui reply Dentistry


A gray, hard mass appearing behind the molars may be due to the proliferation of submucosal sebaceous glands.
It is recommended to consult an oral surgeon or dentist for further examination.
Dr.
Tseng Guang-Hui, Department of Dentistry, Nantou Hospital.

Reply Date: 2022/05/19

More Info


The gray hard object you discovered behind your lower molar could be indicative of several dental issues, and it's understandable that you're feeling concerned about it. Based on your description, there are a few possibilities to consider.

1. Dental Calculus (Tartar): One of the most common causes of hard deposits in the mouth is dental calculus, which forms when plaque hardens on the teeth. This can occur in areas that are difficult to clean, such as the back of molars. The presence of a gray hard substance could be tartar, especially if it is located in a spot where food debris tends to accumulate. Tartar can lead to gum irritation and inflammation, which might explain the redness and slight swelling you’ve experienced.

2. Gum Recession: If there is gum recession, it can expose the underlying tooth structure or even the bone. This exposure might appear as a gray area, especially if the gum tissue has receded significantly. However, gum recession typically comes with sensitivity or discomfort, particularly when brushing or eating.

3. Impacted Wisdom Tooth: If the gray object is related to an impacted wisdom tooth, it could be a part of the tooth that has erupted partially through the gum. This can sometimes lead to localized gum irritation and infection, which might explain the swelling and discomfort you felt after eating.

4. Cavity or Decay: The black dot you mentioned could potentially be a sign of decay. If the gray hard object is part of a cavity, it might not always cause pain, especially in the early stages. However, if the decay progresses, it could lead to more significant issues, including pain and infection.

5. Oral Mucosal Lesions: In some cases, the gray hard object could be related to a benign oral lesion, such as a fibroma or a mucous retention cyst. These are usually painless but can appear as hard masses in the mouth.

Regarding your questions about pain associated with gum recession or an impacted tooth, it is important to note that not all conditions will present with pain. Some individuals may experience minimal discomfort even with significant gum recession or an impacted tooth, while others may have severe pain. The absence of pain does not necessarily indicate that there is no issue; it simply means that the condition may not have progressed to a point where it causes discomfort.

Since you have already scheduled an appointment with your dentist, that is a wise decision. A thorough examination, possibly including X-rays, will help clarify the nature of the gray hard object and any underlying issues. Your dentist will be able to provide a definitive diagnosis and recommend appropriate treatment based on their findings.

In the meantime, it’s crucial to maintain good oral hygiene. Continue brushing and flossing regularly, and consider using an antibacterial mouthwash to help reduce inflammation and bacteria in the affected area. Avoiding hard or sticky foods that could exacerbate the issue is also advisable until you have a clearer understanding of what is happening.

In summary, while the gray hard object could be due to several factors, a professional evaluation is essential for an accurate diagnosis and treatment plan. Your proactive approach in seeking dental care is commendable and will help ensure your oral health is managed effectively.

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