OSCE DENTAL HYGIENE REVIEW 2026 QUESTIONS
AND ANSWERS SURE A+
✔✔Maxillary molars are? - ✔✔Trifurcated (mesiobuccal, distobuccal, and palatal roots)
✔✔Class 1 furcation - ✔✔Furcation can be detected with probe but it cannot enter the
space.
✔✔Class 2 furcation - ✔✔Probe penetrates into the furcation, but does not completely
pass through to the other side.
✔✔Class 3 furcation - ✔✔Probe passes completely through the furcation.
✔✔Class 4 furcation - ✔✔Entrance to the furca is clinically visible because of gingival
recession and probe passes through the furcation
✔✔Normal level of the alveolar crest - ✔✔located approximately 1-2 mm apical to
(below) the CEJ.
✔✔What radiographs are used to assess bone level and other problems in the
periodontium? - ✔✔-PA and Vertical BW
, ✔✔What does CAL stand for? - ✔✔Clinical Attachment Level or Loss
✔✔CAL is a more accurate indicator of the periodontal support around a tooth than
probing depth. (T/F) - ✔✔True
✔✔Periapical Abscess - ✔✔radiolucency around the apex of the tooth.
✔✔Functional shank - ✔✔portion between the working end and the handle. Allows the
working end to be adapted to the tooth surface.
✔✔Terminal (lower) shank - ✔✔Portion of the functional shank closest to the working
end, between the working end and the first bend. Normally parallel to the tooth surface.
✔✔Simple shank - ✔✔-Has only one bend. With the working end tip facing the clinician,
the shank is straight.
-Used on anterior teeth and on easily accessible areas.
✔✔Complex shank - ✔✔-Has multiple bends. With the working end facing the clinician,
the shank has a zigzag shape.
-Commonly used on posterior teeth, but may be adapted for anteriors.
✔✔Working end - ✔✔-Working end refers to the part of the instrument that does the
function, such as the explorer tip, a mirror, and also blades.
✔✔Contraindications to Ultrasonic scalers - ✔✔-Respiratory disease (COPD)
-Communicable diseases (tuberculosis)
-Gag reflex
-Cerebral Palsy
-Porcelain or composite restorations (may fracture)
-Demineralized areas
-Newly erupted teeth
-Old pacemakers (new pacemakers are shielded and not contraindicated)
✔✔Type I embrasure - ✔✔Interdental papillae fill the entire embrasure space with a
knife-edge point.
✔✔Stage I Periodontitis - ✔✔-CAL: 1-2 mm
-Bone loss: Coronal third (less the 15%)
-No tooth loss
-Max PD 4mm
✔✔Stage II Periodontitis - ✔✔-CAL: 3-4 mm
-Coronal Third ( 15-30%)
-No tooth loss
AND ANSWERS SURE A+
✔✔Maxillary molars are? - ✔✔Trifurcated (mesiobuccal, distobuccal, and palatal roots)
✔✔Class 1 furcation - ✔✔Furcation can be detected with probe but it cannot enter the
space.
✔✔Class 2 furcation - ✔✔Probe penetrates into the furcation, but does not completely
pass through to the other side.
✔✔Class 3 furcation - ✔✔Probe passes completely through the furcation.
✔✔Class 4 furcation - ✔✔Entrance to the furca is clinically visible because of gingival
recession and probe passes through the furcation
✔✔Normal level of the alveolar crest - ✔✔located approximately 1-2 mm apical to
(below) the CEJ.
✔✔What radiographs are used to assess bone level and other problems in the
periodontium? - ✔✔-PA and Vertical BW
, ✔✔What does CAL stand for? - ✔✔Clinical Attachment Level or Loss
✔✔CAL is a more accurate indicator of the periodontal support around a tooth than
probing depth. (T/F) - ✔✔True
✔✔Periapical Abscess - ✔✔radiolucency around the apex of the tooth.
✔✔Functional shank - ✔✔portion between the working end and the handle. Allows the
working end to be adapted to the tooth surface.
✔✔Terminal (lower) shank - ✔✔Portion of the functional shank closest to the working
end, between the working end and the first bend. Normally parallel to the tooth surface.
✔✔Simple shank - ✔✔-Has only one bend. With the working end tip facing the clinician,
the shank is straight.
-Used on anterior teeth and on easily accessible areas.
✔✔Complex shank - ✔✔-Has multiple bends. With the working end facing the clinician,
the shank has a zigzag shape.
-Commonly used on posterior teeth, but may be adapted for anteriors.
✔✔Working end - ✔✔-Working end refers to the part of the instrument that does the
function, such as the explorer tip, a mirror, and also blades.
✔✔Contraindications to Ultrasonic scalers - ✔✔-Respiratory disease (COPD)
-Communicable diseases (tuberculosis)
-Gag reflex
-Cerebral Palsy
-Porcelain or composite restorations (may fracture)
-Demineralized areas
-Newly erupted teeth
-Old pacemakers (new pacemakers are shielded and not contraindicated)
✔✔Type I embrasure - ✔✔Interdental papillae fill the entire embrasure space with a
knife-edge point.
✔✔Stage I Periodontitis - ✔✔-CAL: 1-2 mm
-Bone loss: Coronal third (less the 15%)
-No tooth loss
-Max PD 4mm
✔✔Stage II Periodontitis - ✔✔-CAL: 3-4 mm
-Coronal Third ( 15-30%)
-No tooth loss
