1. Supervisors: Dr. Nayda Nasco Dr. Arwa Maltoof Dr. Muneera Ghaithan University of Aden Faculty of Dentistry

3. Increased awareness among people The introduction of x-rays Development of latest instruments and techniques Endodontic therapy extends to the dentists and the patients the opportunity to save teeth

7. 1.To determine the needs of E.T. according to patient's sex and age. 2.To identify the most common etiological factors leading to the need of E.T 3.To identify the most frequent symptoms expressed by the patients. 4.To estimate the frequency of teeth needing E.T according to the location in the dental arches. 5.To identify the pulpal and periapical status of the teeth those need E.T.

9. An observational, retrospective survey (344) of dental sheets Conservative clinic Aden Faculty of Dentistry March to May 2010.

10. Normal pulp:asymptomatic, respond normally to pulp testing Reversible pulpitis:slight pain, after different stimulus. The teeth responded within normal limits to palpation and percussion. Irreversible pulpitis: sharp, dull, irradiated or diffuse spontaneous pain Pulp Necrosis: No response to the application of cold or heat stimuli or cavity test.

11. Yes: When some radiolucency was observed in the radiograph No: When no observable radiographic changes

12. Quantitative analysis of the collected data was performed by using the statistical program SPSS, version 11.5. The relative frequency (%) of all variables studied was obtained and the relation between them was assessed by the nonparametric Chi- square test (p < 0.05)

14. Distribution of patients according to the needs of endodontic treatment

15. This is less than we expected

16. Statistical significance p<0.05 Ismail, Ismail, Syuhada; 2008

17. Sunders and Saunders 1988 Statistical significance p<0.05

18. The need of E.T. according to gender and age groups. Statistical significance p<0.05

19. Chief complaint expressed by patients treated at the Conservative Clinic

20. The high prevalence of pain in patients who need endodontic treatment is attributed to the fact that most endodontic patient come to the clinic when their pulp is in the irreversible state

21. A.S. Al-Yahya,, H.A. Selirn,, E.E. Guile Serene and Spolsky 1981 Etiological factors

22. Distribution of teeth that need ET according to location in the dental arches Ingle and Taintor 1976

23. Serene and Spolsky 1995 Ørstavik and Hörsted-Bindslev 1993, Final Diagnosis of patients needed ET

24. The periapical Status of teeth that needed ET

26. The results of this study indicate that The needs of endodontic treatment in this group of patients was low, male needed endodontic treatment more than female. Dental caries was responsible for the majority of cases that needed endodontic treatment. Pain was the commonest complain of the patients that seek for dental treatment. Maxillary teeth showed the highest percentage of affected teeth. Most of the cases exhibited irreversible pulpitis followed by pulp necrosis.

27. Recommendation 1.To develop new researches concerning the need of endodontic in our population 2.Efforts should be held by to popularize the ET between people as a way for preserving pulpally involved teeth instead of extraction, through puplic dental health programs. 3.Improvement of ET depend on good educational and practical programs in the dental schools to minimize Iatrogenic cause for loosing tooth vitality