#nbde

[theblondedent]

When people say they studied every day for 3 months for NBDE:

[dentistmo-blog]

4/8/2017 - Day 27/100 days of Boards Review

ANATOMY

focus on the TONGUE:

-All tongue muscles except palatoglossus are innvervated by CN XII -Blood supply is via the lingual artery. Veins drain to the internal jugular vein -Lymph: anterior -> submental - Middle: lateral -> submandibular; medial -> inferior deep cervical nodes - Posterior -> superior deep cervical nodes

Musculature:

Intrinsic muscles of the tongue:

Longitudinals (sup and inf) - shorten tongue, bending

Transversus - Narrows and elongates tongue

Verticalis - flattens and broadens tongue

Extrinsic muscles:

Genioglossus - protrudes tongue

Hyoglossus - depresses tongue

Styloglossus - pulls tongue up and back

Palatoglossus - pulls tongue up and back, INNERVATED BY CN X (pharyngeal plexus) 

Phonetics: 

CNXII: L’s - moves tongue against the roof of the mouth

CNVII: M’s - moves lips

CNX: Kuhh - raises the palate

[dentistcrentist16]

Guys, I'm so nervous for the NBDE part 2. It's in one week, and I still don't have a perio patient locked down. Tell me it's going to be ok. Also, it's been a while, and I'm still alive.

[theblondedent]

Studying for NBDE Part 1 vs. NBDE Part 2:

Part 1:

Part 2:

[dentistmo-blog]

2/23/2017 - Day 22/100 days of Boards Review

DENTAL ANATOMY

Dental Injuries:

Attrition:

Loss of tooth structure due to tooth on tooth contact

Results in wear facets (commonly seen at LI edge of maxillary centrals and FI edge of mandibular canines)

Usually due to parafunction/bruxism/grinding

Abrasion:

Loss of tooth structure due to mechanical means

Aggressive brushing or bad oral habits like fingernail biting

Erosion:

Loss of tooth structure due to chemical means

Drinking lots of acidic drinks (facial and buccal surfaces)

Bulimina, GERD (lingual and palatal surfaces)

Abraction:

Mechanical stress

Poor occlusion

Also bruxism

[dentistmo-blog]

2/18/2017 - Day 20/100 days of Boards Review

ANATOMY

Neck:

SCM -

 From

The manubrium and medial 1/3 of the clavicle

To

Mastoid process and superior nuchal line

Function

Flexes neck and pulls head to shoulder; pulls head to the opposite side

Innervation

CN XI

Trapezius-

From

The thoracic and cervical spines, lingamentum nucha and superior nuchal line

To

The scapula and lateral 1/3 of clavicle

Function:

Extends head and raises chin up to the opposite side; elevates the acromion 

Innervation:

CN XI

Clinical note:

If CN XI (spinal accessory nerve) is damaged in the posterior triangle, patient will be unable to raise arm in a horizontal fashion and won’t be able to shrug their shoulder.

[dentistmo-blog]

2/9/2017 - Day 15/100 days of Boards Review

ANATOMY

Lymph Nodes

The lymph nodes of the head and neck can be divided into two groups; a superficial ring of lymph nodes, and a vertical group of deep lymph nodes.

More after the break~~~

Superficial Lymph Nodes

The superficial lymph nodes of the head and neck receive lymph from the scalp, face and neck. They are arranged in a ring shape; extending from underneath the chin, to the posterior aspect of the head. They ultimately drain into the deep lymph nodes.

Occipital: There are usually between 1-3 occipital lymph nodes. They are located in the back of the head at the lateral border of the trapezius muscle and collect lymph from the occipital area of the scalp.

Mastoid: There are usually 2 mastoid lymph nodes, which are also called the post-auricular lymph nodes. They are located posterior to the ear and lie on the insertion of the sternocleidomastoid muscle into the mastoid process. They collect lymph from the posterior neck, upper ear and the back of the external auditory meatus (the ear canal).

Pre-auricular: There are usually between 1-3 pre-auricular lymph nodes. They are located anterior to the auricle of the ear, and collect lymph from the superficial areas of the face and temporal region.

Parotid: The parotid lymph nodes are a small group of nodes located superficially to the parotid gland. They collect lymph from the nose, the nasal cavity, the external acoustic meatus, the tympanic cavity and the lateral borders of the orbit. There are also parotid lymph nodes deep to the parotid gland that drain the nasal cavities and the nasopharynx.

Submental: These lymph nodes are located superficially to the mylohoid muscle. They collect lymph from the central lower lip, the floor of the mouth and the apex of the tongue.

Submandibular: There are usually between 3-6 submandibular nodes. They are located below the mandible in the submaxillary triangle and collect lymph from the cheeks, the lateral aspects of the nose, upper lip, lateral parts of the lower lip, gums and the anterior tongue. They also receive lymph from the submental and facial lymph nodes.

Facial: This group comprises the maxillary/infraorbital, buccinator and supramandibular lymph nodes. They collect lymph from the mucous membranes of the nose and cheek, eyelids and conjunctiva.

Superficial Cervical: The superficial cervical lymph nodes can be divided into the superficial anterior cervical nodes and the posterior lateral superficial cervical lymph nodes. The anterior nodes lie close to the anterior jugular vein and collect lymph from the superficial surfaces of the anterior neck. The posterior lateral nodes lie close to the external jugular vein and collect lymph from superficial surfaces of the neck.

Deep Lymph Nodes

The deep (cervical) lymph nodes receive all of the lymph from the head and neck –  either directly or indirectly via the superficial lymph nodes. They are organised into a vertical chain, located within close proximity to the internal jugular vein within the carotid sheath. The efferent vessels from the deep cervical lymph nodes converge to form the jugular lymphatic trunks.The nodes can be divided into superior and inferior deep cervical lymph nodes. They are numerous in number, but include the prelaryngeal, pretracheal, paratracheal, retropharyngeal, infrahyoid, jugulodigastric (tonsilar), jugulo-omohyoid and supraclavicular nodes.

Source:

http://teachmeanatomy.info/neck/vessels/lymphatics/

[dentistmo-blog]

2/2/2017 - Day 9/100 days of Boards Review

OCCLUSION

CURVES~~

Spee: anteroposterior curve Wilson: mediolateral curve. Compensating: in artifical teeth to develop balanced occlusion

Occlusal relationships

In cross-bite occlusion, working and nonworking cusps are reversed for the affected teeth

Working cusps: maxillary linugal and mandibular buccal

Oppose central fossae and marginal ridges

support vertical dimension

Nonworking: maxillary buccal and mandibular lingual

oppose embrasure spaces and grooves

guide movements during excursions