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CC BY-NC-ND 4.0 · Eur J Dent 2017; 11(02): 210-215
DOI: 10.4103/ejd.ejd_56_17
Original Article
Dental Investigation Society

Cone beam computed tomographic evaluation of styloid process: A retrospective study of 1000 patients

Merve Donmez
1   Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkiye
,
Ozlem Okumus
2   Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Istanbul Kemerburgaz University, Istanbul, Turkiye
,
Filiz Namdar Pekiner
1   Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Marmara University, Istanbul, Turkiye
› Author Affiliations
Further Information

Publication History

Publication Date:
23 September 2019 (online)

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ABSTRACT

Objective: The styloid process (SP) is a bony projection, located just anterior to the stylomastoid foramen, the normal length of which is approximately 20–30 mm. The length of SP when exceeds 30 mm it is said to “elongated.” The purpose of this retrospective study was to assess the prevalence of elongated SP (ESP) by cone beam computed tomography (CBCT) examination in Turkish subpopulation and its relation to gender and age. Materials and Methods: This study analyzed CBCT of 1000 patients who were randomly selected to participate and were aged from 14 to 78 years. Any radiograph with questionable SP was excluded from the study. The apparent length and thickness of the SP were measured by two dental and maxillofacial radiologists. The ESP was classified with radiographic appearance-based morphology of elongation. The data were analyzed with the IBM SPSS Statistics 20.0. Results: The mean age of patients was 42.49 ± 14.83 years. The length of SP was measured over 30 mm in 151 patients (15.1%). A total of 151 CBCT showed ESP, of which 87 (57.6%) were noticed in males and 64 (42.4%) in female patients. The length of right-sided SP ranged from 30.05 to 85.49 mm and left-sided SP from 30.14 to 83.72 mm. Conclusion: CBCT is a valuable diagnostic imaging tool which makes accurate length measurements. It is important for the clinicians to be aware of natural variations of the SP whose clinical importance is not well understood.

Key words:

Cone beam computed tomography - elongated - styloid process
 

  • REFERENCES

  • 1 Shaik MA, Naheeda Kaleem SM, Wahab A, Hameed S. Prevalence of elongated styloid process in Saudi population of Aseer region. Eur J Dent 2013; 7: 449-54
    Article in Thieme ConnectPubMedGoogle Scholar
  • 2 Roopashri G, Vaishali MR, David MP, Baig M. Evaluation of elongated styloid process on digital panoramic radiographs. J Contemp Dent Pract 2012; 13: 618-22
    CrossrefPubMedGoogle Scholar
  • 3 Standring S. Skull and Mandible. In: Gray's Anatomy: The Anatomical Basis of Clinical Practice. 39th ed. Edinburg: Elsevier; 2005: 470
    Google Scholar
  • 4 Rathee M, Hooda A, Yadav S, Gulia J. Bilateral elongated styloid process: A case report and review of literature. Internet J Otorhinolaryngol 2009; 12-1
    Google Scholar
  • 5 Alpoz E, Akar GC, Celik S, Govsa F, Lomcali G. Prevalence and pattern of stylohyoid chain complex patterns detected by panoramic radiographs among Turkish population.. urg Radiol Anat 2014; 36: 39-46
    Google Scholar
  • 6 Sekerci AE, Soylu E, Arikan MP, Aglarci OS. Is there a relationship between the presence of ponticulus posticus and elongated styloid process?. Clin Imaging 2015; 39: 220-4
    CrossrefPubMedGoogle Scholar
  • 7 Eagle WW. Symptomatic elongated styloid process; report of two cases of styloid process-carotid artery syndrome with operation. Arch Otolaryngol 1949; 49: 490-503
    CrossrefPubMedGoogle Scholar
  • 8 Ghosh LM, Dubey SP. The syndrome of elongated styloid process. Auris Nasus Larynx 1999; 26: 169-75
    CrossrefPubMedGoogle Scholar
  • 9 Moffat DA, Ramsden RT, Shaw HJ. The styloid process syndrome: Aetiological factors and surgical management. J Laryngol Otol 1977; 91: 279-94
    CrossrefPubMedGoogle Scholar
  • 10 Murtagh RD, Caracciolo JT, Fernandez G. CT findings associated with Eagle syndrome. AJNR Am J Neuroradiol 2001; 22: 1401-2
    PubMedGoogle Scholar
  • 11 Anbiaee N, Javadzadeh A. Elongated styloid process: Is it a pathologic condition?. Indian J Dent Res 2011; 22: 673-7
    CrossrefPubMedGoogle Scholar
  • 12 Prasad KC, Kamath MP, Reddy KJ, Raju K, Agarwal S. Elongated styloid process (Eagle's syndrome): A clinical study. J Oral Maxillofac Surg 2002; 60: 171-5
    CrossrefPubMedGoogle Scholar
  • 13 Slavin KV. Eagle syndrome: Entrapment of the glossopharyngeal nerve? Case report and review of the literature. J Neurosurg 2002; 97: 216-8
    CrossrefPubMedGoogle Scholar
  • 14 Langlais RP, Miles DA, Van Dis ML. Elongated and mineralized stylohyoid ligament complex: A proposed classification and report of a case of Eagle's syndrome. Oral Surg Oral Med Oral Pathol 1986; 61: 527-32
    CrossrefPubMedGoogle Scholar
  • 15 Yavuz H, Caylakli F, Erkan AN, Ozluoglu LN. Modified intraoral approach for removal of an elongated styloid process. J Otolaryngol Head Neck Surg 2011; 40: 86-90
    Google Scholar
  • 16 Ilgüy M, Ilgüy D, Güler N, Bayirli G. Incidence of the type and calcification patterns in patients with elongated styloid process. J Int Med Res 2005; 33: 96-102
    Google Scholar
  • 17 Kursoglu P, Unalan F, Erdem T. Radiological evaluation of the styloid process in young adults resident in Turkey's Yeditepe University faculty of dentistry. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2005; 100: 491-4
    CrossrefPubMedGoogle Scholar
  • 18 Scaf G, Freitas DQ, Loffredo Lde C. Diagnostic reproducibility of the elongated styloid process. J Appl Oral Sci 2003; 11: 120-4
    CrossrefPubMedGoogle Scholar
  • 19 Sudhakara Reddy R, Sai Kiran Ch, Sai Madhavi N, Raghavendra MN, Satish A. Prevalence of elongation and calcification patterns of elongated styloid process in south India. 2013; 5: e30-5
    PubMedGoogle Scholar
  • 20 Oztunç H, Evlice B, Tatli U, Evlice A. Cone-beam computed tomographic evaluation of styloid process: A retrospective study of 208 patients with orofacial pain. Head Face Med 2014; 10-5
    PubMedGoogle Scholar
  • 21 Basekim CC, Mutlu H, Güngör A, Silit E, Pekkafali Z, Kutlay M. et al. Evaluation of styloid process by three-dimensional computed tomography. Eur Radiol 2005; 15: 134-9
    CrossrefPubMedGoogle Scholar
  • 22 Keur JJ, Campbell JP, McCarthy JF, Ralph WJ. The clinical significance of the elongated styloid process. Oral Surg Oral Med Oral Pathol 1986; 61: 399-404
    CrossrefPubMedGoogle Scholar
  • 23 Vadgaonkar R, Murlimanju BV, Prabhu LV, Rai R, Pai MM, Tonse M. et al. Morphological study of styloid process of the temporal bone and its clinical implications. Anat Cell Biol 2015; 48: 195-200
    CrossrefPubMedGoogle Scholar
  • 24 Jung T, Tschernitschek H, Hippen H, Schneider B, Borchers L. Elongated styloid process: When is it really elongated?. Dentomaxillofac Radiol 2004; 33: 119-24
    CrossrefPubMedGoogle Scholar
  • 25 Vieira EM, Guedes OA, Morais SD, Musis CR, Albuquerque PA, Borges ÁH. Prevalence of elongated styloid process in a central Brazilian population. J Clin Diagn Res 2015; 9: ZC90-2
    PubMedGoogle Scholar
  • 26 Rizzatti-Barbosa CM, Ribeiro MC, Silva-Concilio LR, Di Hipolito, Ambrosano GM. Is an elongated stylohyoid process prevalent in the elderly? A radiographic study in a Brazilian population. Gerodontology 2005; 22: 112-5
    CrossrefPubMedGoogle Scholar
  • 27 Leite HF, Niccoli-Filho WD, Liberti EA, Madeira MC, SimÁμes S. Prevalence of elongated stylohyoid ligament complex in human skulls. Rev Odontol UNESP 1988; 17: 145-51
    PubMedGoogle Scholar
  • 28 de Andrade KM, Rodrigues CA, Watanabe PC, Mazzetto MO. Styloid process elongation and calcification in subjects with TMD: Clinical and radiographic aspects. Braz Dent J 2012; 23: 443-50
    PubMedGoogle Scholar
  • 29 Andrei F, Motoc AG, Didilescu AC, Rusu MC. A 3D cone beam computed tomography study of the styloid process of the temporal bone. Folia Morphol (Warsz) 2013; 72: 29-35
    CrossrefPubMedGoogle Scholar
  • 30 Cullu N, Deveer M, Sahan M, Tetiker H, Yilmaz M. Radiological evaluation of the styloid process length in the normal population. Folia Morphol (Warsz) 2013; 72: 318-21
    CrossrefPubMedGoogle Scholar
  • 31 Ekici F, Tekbas G, Hamidi C, Onder H, Goya C, Cetincakmak MG. et al. The distribution of stylohyoid chain anatomic variations by age groups and gender: An analysis using MDCT. Eur Arch Otorhinolaryngol 2013; 270: 1715-20
    CrossrefPubMedGoogle Scholar
  • 32 Ludlow JB, Ivanovic M. Comparative dosimetry of dental CBCT devices and 64-slice CT for oral and maxillofacial radiology. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008; 106: 106-14
    CrossrefPubMedGoogle Scholar
  • 33 Orhan K, Sakul BU, Oz U, Bilecenoglu B. Evaluation of the pterygoid hamulus morphology using cone beam computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 112: e48-55
    PubMedGoogle Scholar
  • 34 Moreira CR, Sales MA, Lopes PM, Cavalcanti MG. Assessment of linear and angular measurements on three-dimensional cone-beam computed tomographic images. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009; 108: 430-6
    CrossrefPubMedGoogle Scholar