Περίληψη:
BackgroundThe aims of the present study were to determine the thickness
of the Schneiderian membrane and identify the width of the maxillary
sinus, which is indicated by the buccal and lingual walls of the sinus
angle between. Furthermore, to investigate the possibility of a
correlation between the aforementioned structures and also other
anatomical and demographic parameters using CBCTs for dental implant
surgical planning.MethodsThe study included CBCT images of 76
consecutive patients with field-of-view 15x12 or 12x8cm. Reformatted
cross-sectional CBCT slices were analyzed with regard to the thickness
of the Schneiderian membrane designated by the medial and the lateral
walls of the sinus, in three different standardized points of reference.
Age, gender, and position of the measurement were evaluated as factors
that could influence the dimensions of the anatomical structures, using
univariate and multivariate random effects regression model.ResultsThe
mean thickness of the Schneiderian membrane was 1.601.20mm. The average
thickness revealed now differentiation by age (p=0.878), whereas gender
seemed to influence the mean thickness (p=0.010). Also, the thickness of
the Schneiderian membrane increased from medial to distal (p=0.060). The
mean value of the angle designated by buccal and lingual walls of the
sinus was 73.41 +/- 6.89 degrees. The angle measurements revealed no
correlation with age, but a tendency towards lower mean angles in
females (2.5 degrees on average, p=0.097). According to the anatomical
position of the measurement, a differentiation was also detected. No
correlation between thickness of the Schneiderian membrane and the angle
of the walls of the sinus was concluded (p=0.662).Conclusions: This
study demonstrated that the thickness of the Schneiderian membrane and
the width of the maxillary sinus can only be affected by gender and
anatomical position, but not by the age of the patient.
Συγγραφείς:
Kalyvas, Demos
Kapsalas, Andreas
Paikou, Sofia
Tsiklakis,
Konstantinos
