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Wisdom Teeth: Function and Anatomy

Learn about the function and anatomy of wisdom teeth, common problems they cause, why they may require removal in some cases, and practical tips for managing discomfort effectively.

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Written by Dr. J T Hema Pratima

Reviewed by Dr. Md Yusuf Shareef MBBS

Last updated on 27th Aug, 2025

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Introduction

Wisdom teeth are the last set of molars that usually appear in your late teens or early twenties. While they were once useful for our ancestors, modern humans often face problems with them. If you’re curious about why these teeth exist, how they function, and what issues they can cause, this guide is for you!

What Are Wisdom Teeth?

Wisdom teeth, also called third molars, are the four teeth located at the very back of your mouth, two on the top and two on the bottom. They are the last teeth to emerge, usually between the ages of 17 and 25, which is why they’re called "wisdom" teeth (since you’re presumably wiser by then!).

Consult a Dentist for the best advice

Dr Gaurav Jain, Oral and Maxillofacial Surgeon

Dr Gaurav Jain

Oral and Maxillofacial Surgeon

21 Years • BDS, MDS

Delhi

Apollo Hospitals Indraprastha, Delhi

800

120 Cashback

Dr. Ankit Khandelwal, Oral and Maxillofacial Surgeon

Dr. Ankit Khandelwal

Oral and Maxillofacial Surgeon

13 Years • BDS, MDS ( Oral & Maxillofacial Surgery) , PGDCC, Fellowship in Head & Neck Oncology

Kolkata

Gajanan Multispeciality Clinic, Kolkata

recommendation

98%

(75+ Patients)

625

500

Dr. Jagriti Singh, Dentist

Dr. Jagriti Singh

Dentist

13 Years • BDS, MDS, ( Master of science) in Facial Aesthetics And Cosmetology

Gurugram

Irvin cosmetics, Gurugram

1000

800

Dr. Himadri Sinha, Dentist

Dr. Himadri Sinha

Dentist

6 Years • BDS, FMC

New Town

AESTHETICAROOTS, New Town

680

500

Why Do We Have Wisdom Teeth?

Thousands of years ago, early humans had larger jaws and tougher diets (think raw plants and uncooked meat). Wisdom teeth helped them chew these foods effectively. However, over time, our diets have become softer, and our jaws have grown smaller. As a result, many people don’t have enough space for these extra teeth, leading to complications.

Common Problems with Wisdom Teeth

Not everyone experiences issues with their wisdom teeth, but some common problems include:

1. Impaction – When there isn’t enough space, wisdom teeth may get stuck (impacted) in the jawbone or gums, causing pain and swelling.
2. Infection & Gum Disease – Partially erupted wisdom teeth can trap food and bacteria, leading to infections or gum disease.
3. Crowding – They can push other teeth out of alignment, affecting your bite.
4. Cysts or Tumors – Rarely, impacted wisdom teeth can lead to cysts or tumors in the jawbone.

Signs You May Need Your Wisdom Teeth Checked

Here are some common signs to watch for:

  • Pain or swelling at the back of your mouth
  • Difficulty opening your mouth
  • Bad breath or an unpleasant taste
  • Jaw stiffness
  • Headaches

Do Wisdom Teeth Always Need Removal?

Not necessarily! If your wisdom teeth:

  • Grow in properly aligned
  • Are fully erupted (visible above the gums)
  • Can be cleaned easily
  • ...then you may not need removal.
  • However, if they cause pain, infections, or dental crowding, your dentist may recommend extraction.

Tips for Managing Wisdom Teeth Discomfort

If you’re experiencing mild discomfort, try these remedies:

  • Saltwater rinses (warm water + salt) to reduce swelling
  • Over-the-counter pain relievers (like ibuprofen)
  • Cold compress on the cheek to numb pain
  • Soft foods (avoid hard, crunchy, or sticky foods)

When to See a Dentist

If pain persists, swelling worsens, or you have difficulty swallowing, consult a dentist immediately. Early intervention can prevent serious infections.

Final Thoughts

Wisdom teeth are a natural part of our anatomy, but they don’t always fit well in modern mouths. Regular dental check-ups can help monitor their growth and prevent complications.

Consult a Dentist for the best advice

Dr Gaurav Jain, Oral and Maxillofacial Surgeon

Dr Gaurav Jain

Oral and Maxillofacial Surgeon

21 Years • BDS, MDS

Delhi

Apollo Hospitals Indraprastha, Delhi

800

120 Cashback

Dr. Ankit Khandelwal, Oral and Maxillofacial Surgeon

Dr. Ankit Khandelwal

Oral and Maxillofacial Surgeon

13 Years • BDS, MDS ( Oral & Maxillofacial Surgery) , PGDCC, Fellowship in Head & Neck Oncology

Kolkata

Gajanan Multispeciality Clinic, Kolkata

recommendation

98%

(75+ Patients)

625

500

Dr. Jagriti Singh, Dentist

Dr. Jagriti Singh

Dentist

13 Years • BDS, MDS, ( Master of science) in Facial Aesthetics And Cosmetology

Gurugram

Irvin cosmetics, Gurugram

1000

800

Dr. Himadri Sinha, Dentist

Dr. Himadri Sinha

Dentist

6 Years • BDS, FMC

New Town

AESTHETICAROOTS, New Town

680

500

 

Consult a Dentist for the best advice

Dr Gaurav Jain, Oral and Maxillofacial Surgeon

Dr Gaurav Jain

Oral and Maxillofacial Surgeon

21 Years • BDS, MDS

Delhi

Apollo Hospitals Indraprastha, Delhi

800

120 Cashback

Dr. Ankit Khandelwal, Oral and Maxillofacial Surgeon

Dr. Ankit Khandelwal

Oral and Maxillofacial Surgeon

13 Years • BDS, MDS ( Oral & Maxillofacial Surgery) , PGDCC, Fellowship in Head & Neck Oncology

Kolkata

Gajanan Multispeciality Clinic, Kolkata

recommendation

98%

(75+ Patients)

625

500

Dr. Smita Rani Satpathy, Dentist

Dr. Smita Rani Satpathy

Dentist

5 Years • BDS

Bhubaneswar

INNOVATIVE SMILE, Bhubaneswar

100

No Booking Fees

Dr. Jagriti Singh, Dentist

Dr. Jagriti Singh

Dentist

13 Years • BDS, MDS, ( Master of science) in Facial Aesthetics And Cosmetology

Gurugram

Irvin cosmetics, Gurugram

1000

800

Dr. Himadri Sinha, Dentist

Dr. Himadri Sinha

Dentist

6 Years • BDS, FMC

New Town

AESTHETICAROOTS, New Town

680

500

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