Position of impacted mandibular third molar in different skeletal facial types: First radiographic evaluation in a group of Iranian patients

Shokri, Abbas; Mahmoudzadeh, Majid; Baharvand, Maryam; Mortazavi, Hamed; Faradmal, Javad; Khajeh, Samira; Yousefi, Faezeh; Noruzi-Gangachin, Maruf

doi:10.5624/isd.2014.44.1.61

Cited by 10 publications

(11 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…6,13 Mesioangular impaction was the most common type of impaction (46.9% on right and 47.3% on left) and distoangular was the least common type bilaterally (1.4%). This finding is in accordance to the study by Sokri et al 7 Breik and Grubber showed that over 80% of the mandibular third molar impaction in all facial types was in mesioangular position. 14 Viela and Vitol found that vertical position was most prevalent, followed by mesioangular position contrary to findings by Sandhu et al 11,15 and Venta et al 16 where mesioangular position was the most prevalent.…”

Section: Short Mandibular Length Provides Insufficient Spacesupporting

confidence: 93%

Position of Impacted Mandibular Third Molar in different Skeletal Facial Types

Sapkota¹,

Bhatta²,

Shrestha³

et al. 2018

Orthod J Nepal

View full text Add to dashboard Cite

Introduction: Variation in growth pattern in different facial forms affect the space available for tooth eruption, therefore the mandibular third molar impaction has correlation with different skeletal facial types.Objective: To determine the position of impacted mandibular third molar in different skeletal facial types in Nepalese samples.Materials & Method: This cross sectional study was carried out on pre-treatment lateral cephalogram and orthopantomogram records of 207 orthodontic patients visiting Kantipur Dental College and Hospital. Age range of the sample was 16-33 years. Various facial forms were determined with the help of mandibular plane angle (SN-GoGn); for which Nemoceph software was used. Beta angle was used to determine the angle of impaction of mandibular third molar. Impaction pattern was classified as per Pell & Gregory and Winter’s system. SPSS version 20 was used for statistical analysis.Result: Overall rate of mandibular third molar impaction was 63.77% (11.11% unilateral and 52.66% bilateral impaction). The most common type of impaction bilaterally was mesioangular based on Winter’s classification, Class II Position B based on Pell & Gregory’s classification. Higher rate of mandibular third molar impaction was found in dolichofacial type of face (49.2%).Conclusion: Decreased mandibular third molar impactions are seen in brachyfacial type compared to mesofacial and dolichofacial types

show abstract

Section: Short Mandibular Length Provides Insufficient Spacesupporting

confidence: 93%

Position of Impacted Mandibular Third Molar in different Skeletal Facial Types

Sapkota¹,

Bhatta²,

Shrestha³

et al. 2018

Orthod J Nepal

View full text Add to dashboard Cite

show abstract

“…The literature shows that the most common angle was vertical and mesioangular in a study developed in India [13] and vertical in a study conducted in Turkey [7]. In most previous studies, mesioangular impaction was the most common type of impaction [1,3,12,14,17,18,[20][21][22]24,25]. Previous studies have demonstrated that mesioangular position is associated with the highest risk of caries in the distal surface of mandibular second molars [26][27][28].…”

Section: Discussionmentioning

confidence: 97%

Patterns of Mandibular Third Molar Impaction in an Iranian Subpopulation

Rezaei

Imani

Khavid

et al. 2020

Pesqui. Bras. Odontopediatria Clín. Integr.

View full text Add to dashboard Cite

To assess the patterns of mandibular third molar impaction in an Iranian subpopulation. Material and Methods: This retrospective descriptive study evaluated 1000 panoramic radiographs retrieved from the archives of a private radiology clinic in Kermanshah city, Iran. Depth of impaction, position of impacted mandibular third molar relative to the mandibular ramus according to Pell and Gregory's classification and angle of impacted tooth according to Winter's classification were determined. Data were analyzed using the Chi-square and Wilcoxon tests. Results: Of 1000 radiographs, 230 (23%) showed an impaction of at least one mandibular third molar. Mandibular third molar impaction was more common in females (60%). Mesioangular (35.9%) and vertical (34.8%) impactions were the most common angles of impaction in the right and left sides, respectively. Level C (40.3%) and Class I (63.7%) were the most common types of impaction in terms of depth of impaction and position relative to ramus, respectively. No significant difference was observed between the right and left sides of the mandible in terms of patterns of mandibular third molar impaction (p>0.05). Conclusion: Mandibular third molar impaction was relatively common in the studied population. The mesioangular, level C and Class I impaction patterns were the most frequent.

show abstract

“…Many researchers [3, 9, 12, 15-17] have claimed that greater mesial crown inclinations of third molars seem to be indicative of mandibular third molar impaction. Similarly, in this study, mesial inclination of the mandibular third molar and distal inclination of the maxillary third molar were found to be indicative of the tendency for these teeth to be impacted.…”

Section: Discussionmentioning

confidence: 99%

Is There a Possible Association between Skeletal Face Types and Third Molar Impaction? A Retrospective Radiographic Study

2018

View full text Add to dashboard Cite

Objective: Third molar impaction is seen much more than impaction of any other tooth as they are the last teeth to erupt. Inadequate retromolar space and the direction of eruption may be contributing factors. The aim of this study was to investigate the relationship between third molar impaction and different skeletal face types. Subjects and Methods: Panoramic and lateral cephalometric radiographs of 158 orthodontic patients (aged 19–25 years) were retrieved from the archived records of the Necmettin Erbakan University Faculty of Dentistry, Konya, Turkey. Third molar impaction was classified on the basis of Winter’s classification. The skeletal facial type was determined by a measure of the angle created by the lines Ba-Na and Pt-Gn. The mean was 90 ± 2 and this value was regarded as mesofacial. An angle of > 93° was regarded as brachyfacial and an angle of < 87° as dolichofacial. Results: The overall presence of mandibular and maxillary third molar impactions was 65.2 and 38.6%, respectively. Although there was a statistically significant difference between different skeletal facial types and mandibular third molar impaction (p < 0.05), no statistically significant differences were observed between different skeletal facial types and maxillary third molar impaction (p > 0.05). Brachyfacials demonstrated a lower prevalence of third molar impaction than dolichofacials. Conclusions: Different skeletal face types were associated with mandibular third molar impaction. Brachyfacials, who have a greater horizontal facial growth pattern than dolichofacials, showed a lower prevalence of impacted mandibular third molars.

show abstract

Position of impacted mandibular third molar in different skeletal facial types: First radiographic evaluation in a group of Iranian patients

Cited by 10 publications

References 18 publications

Position of Impacted Mandibular Third Molar in different Skeletal Facial Types

Position of Impacted Mandibular Third Molar in different Skeletal Facial Types

Patterns of Mandibular Third Molar Impaction in an Iranian Subpopulation

Is There a Possible Association between Skeletal Face Types and Third Molar Impaction? A Retrospective Radiographic Study

Contact Info

Product

Resources

About