Ali Emre ZEREN, Akif DEMİREL, Kıvanç KAMBUROĞLU, ŞAZİYE SARI

Daimi diş jerminin koronal hareketi ile süt molar dişlerin apikal açıklığının yer değiştirmesi arasındaki korelasyonun değerlendirilmesi

Amaç: Bu çalışmanın amacı, daimi diş jerminin koronale sürme hareketi ile süt dişi apikal açıklığının koronal yöndeki yer değiştirmesi arasındaki korelasyonun belirlenmesi ve daimi diş jermi kron apeksinin, süt molar dişlerde kanal çalışma boyu açısından belirleyici bir referans noktası olup olmayacağının araştırılmasıdır. Gereç ve Yöntemler: Konik ışınlı bilgisayarlı tomografi görüntüleri kullanılarak, 30 adet alt süt molar dişe ait 115 kök kanalı, daimi diş jerminin konumuna göre 3 gruba ayrılmıştır (Grup 1: Daimi diş jermi süt dişi köklerinin altında, Grup 2: köklerin apikal üçlüsünde, Grup 3: köklerin orta üçlüsünde). Her 3 grup için, daimi diş jerminin koronale sürme hareketi ile apikal açıklığın koronale yer değiştirmesi arasındaki korelasyon; süt dişi kök apeksi, apikal açıklık ve daimi diş jerminin kron apeksi referans noktaları kullanılarak araştırılmıştır. Bulgular: Daimi diş jerminin süt dişi köklerinin apikal üçlüsünde konumlandığı Grup 2’de diş jermi ile apikal açıklığın koronale yer değiştirmesinde korelasyon tespit edildiği (p

The evaluation of the correlation between coronal movement of permanent tooth germ and displacement of apical foramen of the primary molars

Background: The aim of this study was to determine the correlation between the coronal movement of the permanent tooth germ (PTG) and apical foramen (AF), and to determine whether the crown apex of PTG was a determining point regarding the canal working length in the primary molar teeth. Methods: 115 root canals of 30 primary molar teeth were divided into 3 groups according to the position of the PTG (Group 1: PTG was below the roots of primary molar, Group 2: PTG at the apical third of the roots of primary molar, Group 3: PTG at the middle third of the roots of primary molar) by using cone-beam computed tomography images. For each groups, correlation between coronal movement of the PTG and AF was investigated by using reference points of root apex of primary tooth, AF and crown apex of the PTG. Results: In Group 2, where the PTG was located at the apical third of the roots of primary tooth, the correlation was found between the coronal movement of the PTG and AF. However, this correlation was not found in Group 1 and 3, where the PTG was at below the roots of primary molar and middle third, respectively. Conclusion: It was concluded that the crown apex of the PTG could be used as a reference point in determining the canal working lenght in the case where the PTG was located in the apical third.

PDF

___

1. Camp JH. Pulp therapy for primary and young permanent teeth. Dent Clin North Am 1984; 28: 651- 68.
2. Salama FS, Anderson RW, McKnight-Hanes C, Barenie JT, Myers DR. Anatomy of primary incisor and molar root canals. Pediatr Dent 1992; 14: 117-8.
3. Zoremchhingi, Joseph T, Varma B, Mungara J. A study of root canal morphology of human primary molars using computerised tomography: an in vitro study. J Indian Soc Pedod Prev Dent 2005; 23: 7-12.
4. Camp JH, Fuks AB. Pediatric endodontics: endodontic treatment for the primary and young permanent dentition. Cohen S, Hargreaves KM, eds. Pathways of the pulp. St Louis: Mosby; 2006. p. 822- 82.
5. Krakow AA, Berk H, Gran P. Advanced endodontic therapy in pedodontics. White GE, ed. Clinical Oral Pediatrics. Quintessence Publishing Co; 1981. p. 247- 62.
6. Garcia-Godoy F. Evaluation of an iodoform paste in root canal therapy for infected primary teeth. ASDC J Dent Child 1987; 54: 30-4.
7. Zhang ZL, Qu XM, Li G, Zhang ZY, Ma XC. The detection accuracies for proximal caries by conebeam computerized tomography, film, and phosphor plates. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 111: 103-8.
8. Seo DG, Gu Y, Yi YA, Lee SJ, Jeong JS, Lee Y, et al. A biometric study of C-shaped root canal systems in mandibular second molars using cone-beam computed tomography. Int Endod J 2012; 45: 807-14.
9. Cheung GS, Wei WL, McGrath C. Agreement between periapical radiographs and cone-beam computed tomography for assessment of periapical status of root filled molar teeth. Int Endod J 2013; 46: 889-95.
10.Liang YH, Jiang L, Chen C, Gao XJ, Wesselink PR, Wu MK, et al. The validity of cone-beam computed tomography in measuring root canal length using a gold standard. J Endod 2013; 39: 1607-10.
11.Connert T, Hülber-J M, Godt A, Löst C, ElAyouti A. Accuracy of endodontic working length determination using cone beam computed tomography. Int Endod J 2013; 47: 698-703.
12.Domark JD, Hatton JF, Benison RP, Hildebolt CF. An ex vivo comparison of digital radiography and conebeam and micro computed tomography in the detection of the number of canals in the mesiobuccal roots of maxillary molars. J Endod 2013; 39: 901-5.
13.Paes da Silva Ramos Fernandes LM, Rice D, Ordinola-Zapata R, Alvares Capelozza AL, Bramante CM, Jaramillo D, et al. Detection of various anatomic patterns of root canals in mandibular incisors using digital periapical radiography, 3 cone-beam computed tomographic scanners, and microcomputed tomographic imaging. J Endod 2014; 40: 42-5.
14.Tchorz JP, Poxleitner PJ, Stampf S, Patzelt SBM, Rottke D, Hellwig E, et al. The use of cone beam computed tomography to predetermine root canal lengths in molar teeth: a comparison between two-dimensional and threedimensional measurements. Clin Oral Investig 2014; 18: 1129-33.
15.Cheng L, Zhang R, Yu X, Tian Y, Wang H, Zheng G, et al. A comparative analysis of periapical radiography and cone-beam computerized tomography for the evaluation of endodontic obturation length. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 112: 383-9.
16.Jung MS, Lee SP, Kim GT, Choi SC, Park JH, Kim JW. Three-dimensional analysis of deciduous maxillary anterior teeth using conebeam computed tomography. Clin Anat 2012; 25: 182-8.
17.Gaurav V, Srivastava N, Rana V, Adlakha VK. A study of root canal morphology of human primary incisors and molars using cone beam computerized tomography: an in vitro study. J Indian Soc Pedod Prev Dent 2013; 31: 254-9.
18.Doğan MS, Yavuz İ, Tümen EC. Use fields of cone beam computed tomography with children. Turkiye Klinikleri J Pediatr DentSpecial Topics 2015; 1: 118-30. 19.ElNesr NM, Avery JK. Tooth eruption and shedding. Steele PF, ed. Oral Development and Histology. Thieme; 2002. p. 123-40.