application of opg in orthodontics
TRANSCRIPT
APPLICATION OF OPG IN
ORTHODONTICSPRESENTED BY:
SEYED MOHAMMAD REZA MASOUMISTUDENT RESEARCH COMMITTEE, SHAHID SADOUGHI
UNIVERSITY OF MEDICAL SCIENCES, YAZD, IRAN
THE PANORAMIC RADIOGRAPH PROVIDES INFORMATION ON THE NUMBER OF TEETH
PRESENT, ERUPTION PROBLEMS, ROOT FORM AND LENGTH, QUALITY OF
ALVEOLAR BONE AND OTHER PATHOLOGICAL CONDITIONS. PANORAMIC RADIOGRAPHS ARE ALSO OFTEN TAKEN DURING TREATMENT TO EVALUATE THE PARALLELISM OF THE ROOTS AND THE PRESENCE OF ROOT RESORPTION OR
BLUNTING OF THE ROOT APICES .
NORMAL ANATOMY
BONY LANDMARKS IN MAXILLA
6
15
15. Glenoid fossa19. Floor of Max.Sinus
17. Zygomatic Arch16. Articular eminence 18.Post. wall max. sinus20. Zygomatic process of max. forming innominate line
21. Hard palate 22. Floor of the orbit 23. Nasal septum 24. Incisive foramen25. Inferior choncha 26. Meatus 27. Frontal process of Z.bone
1617
18
19
2021
22 2329
25
24
26
28.Pterygo max. fissure30. Maxillary tuberosity29.Spine of the sphenoid bone 31. Lateral pterygoid plate
3130
2827
DENTAL ERUPTION : NORMAL AND PROBLEMS
Panoramic radiograph showing a normal eruption pattern in a 9-year-old young boy. Adequate yearly follow-up will
ensure optimal tooth eruption.
SEQUENCE AND CHRONOLOGY OF TOOTH
ERUPTION
CHRONOLOGY OF HUMAN PERMANENT DENTITION
LOSS OF SPACE PREVENTING THE LOWER PREMOLARS FROM ERUPTING
MIGRATION OF UPPER MOLARS AND LOSS OF SPACE (ERUPTION PROBLEM).
RADIOGRAPH AND PICTURE SHOWING THE POSITION OF THE CANINES IN THE PALATE
(INDICATED BY THE ARROWS).
SUPERNUMERARY TOOTH
MESIODENS
KISSING MOLARS
OPG SHOWING MANDIBULAR THIRD MOLAR FUSED WITH SUPERNUMERARY
TOOTH
GEMINATION
BILATERAL TRANSPOSITION OF THE MAXILLARY CANINES AND FIRST PREMOLARS
DELAYED INCISOR ERUPTION
PANORAMIC X-RAY ON THIS NINE YEAR OLD REVEALS
CONGENITALLY MISSING ADULT PRE-MOLAR. YOU CAN SEE ON THE LEFT OF THE SCREEN THERE IS NO TOOTH BUD FORMING
AS COMPARED TO THE SAME AREA ON THE RIGHT SIDE
MISSING
NON-SYNDROMIC OLIGODONTIA OF PRIMARY AND PERMANENT DENTITION
BILATERAL ECTOPIC ERUPTION ON THE MAXILLA OF THE PERMANENT FIRST MOLARS INTO THE PRIMARY SECOND
MOLARS
ANKYLOSIS
FRACTURES
MANDIBULAR FRACTURE
PANORAMIC IMAGE SHOWS SOFT PALATE (THICK WHITE ARROW), SUBCONDYLAR FRACTURE (THICK BLACK ARROW), SPINE OF
SPHENOID BONE (THIN BLACK ARROW), AND PHARYNGEAL WALL (THIN WHITE ARROW).
ALVEOLAR FRACTURE INANTERIOR MAXILLA
PANORAMIC TOMOGRAM OF FIXATION OF SUBCONDYLAR FRACTURE
ROOT RESORPTION
THE OPG REVEALED AN ORTHOGRADE POSITION OF THE ROOT OF 12, THE ROOT
APEX REVEALED RESORPTION
OTHERS
THE PANORAMIC RADIOGRAPH DISCLOSED A NORMAL BONE, ABSENCE OF THIRD MOLARS AND A GOOD ROOT
PARALLELISM
SERIAL PANORAMIC RADIOGRAPHS CONFIRMED THE UPRIGHTING OF THE MANDIBULAR PREMOLARS AND FIRST MOLARS, AND FAVORABLE ROOT PARALLELISM.
MESIAL DRIFTING OF THE MANDIBULAR THIRD MOLARS AND A GOOD ERUPTION PATH OF UPPER THIRD MOLARS
MICRODONTIA IN RELATION TO RIGHT LATERAL INCISOR TOOTH