Dental crowns and bridges are commonly used to address various dental issues and restore the function and aesthetics of a patient's teeth. Some of the dental problems that crowns and bridges can fix include:

1. Tooth Decay: Dental crowns are used to cover and protect severely decayed teeth when a traditional filling is insufficient.

2. Fractured or Broken Teeth: A crown can provide support and strength to teeth that are fractured or broken, preventing further damage.

3. Root Canal Treatment: After a root canal procedure, a dental crown is often placed over the treated tooth to protect and strengthen it.

4. Large Fillings: When a tooth has a large filling, a crown can be used to reinforce the tooth and prevent it from cracking.

5. Cosmetic Enhancements: Dental crowns can improve the appearance of misshapen, discolored, or stained teeth, enhancing the overall smile.

6. Misaligned or Crooked Teeth: For minor alignment issues, crowns can be used to alter the shape and position of teeth, improving their appearance.

7. Worn Down Teeth: Teeth that have been significantly worn down due to grinding or other factors can be restored with dental crowns.

8. Missing Teeth: Dental bridges can replace one or more missing teeth by using adjacent teeth as support.

9. Bite Problems: Dental crowns and bridges can help correct bite issues, such as overbites, underbites, and crossbites, by realigning the teeth.

10. Chewing and Speaking Difficulties: Dental restorations like crowns and bridges can improve chewing and speaking functions that may have been compromised due to dental problems.

11. Protecting Weak Teeth: Teeth that are weakened due to large fillings or root canal treatment can be strengthened with crowns.

12. Replacing Large Fillings: When a tooth has an old and failing large filling, a crown can be used to replace it and provide better support and protection.

It's essential to consult with a qualified dentist to determine whether dental crowns or bridges are suitable solutions for specific dental issues. Each case is unique, and a dental professional will assess your oral health to recommend the most appropriate treatment plan for your individual needs.