Purpose: To accomplish an anatomic study of furcation grooves and dentin width in buccal roots of MFPs.
•N= 141 extracted MFPs with well-formed roots without endodontic treatment from patients aged 35-65 years.
•n= 20 randomly selected for measurement out of 117 MFPs that had palatal groove in buccal roots.
- Macroscopic study to determine the percentage of buccal roots with palatal groove along the bifurcation aspect. Fig1
- Palatal root was eliminated by diamond disk
- Three horizontal slices made to buccal root:
•coronal (2 mm from furcation) •apical (2 mm from apex)
•middle (equal distant between both) üStatistical analysis by using the coefficient of correlation of Pearson (r2) and paired t test.
Most highlighted Results:
1.The palatal groove in the buccal root was present in 83% of the sample 117/141
2.Middle third – depth of the groove was negatively correlative with dentin thickness of palatal wall.
3.Coronal and middle thirds – furcation groove angle had a positive correlation with RDT
4.Coronal and middle thirds – dentinal width of the buccal wall was significant larger than that of the palatal wall.
Canal shape generally reproduces the external root anatomy, in many cases presenting a kidney-shaped transversal section à consideration throughout cleaning and shaping plus post space prep to avoid errors/mishaps.
Strength: Multiple comprehensive measurements
Weakness: didn’t consider patients’ ages unlike Bellucci and Perrini, small sample size