Stomatognathic System, Oral Pathology, and Dental Pharmacology

Vocabulary practice flashcards covering stomatognathic embryology and histology, biochemistry of dental hard tissues, oral microbiology, dental anomalies, pharmacokinetics, propaedeutics, Mexican Official Standards, and local anesthesia techniques.

Stomatognathic System

The integrated anatomical complex of organs and tissues that perform the physiological functions of speaking, chewing, kissing, swallowing, smiling, breathing, and sucking.

Pharyngeal Arches and Embryonic Pouches

Embryonic branchial structures developing between weeks $4$ and $12$ from which the oral cavity, stomodeum, and associated craniofacial structures originate.

Stomodeum

The primitive anatomical oral cavity of the embryo, lined by ectoderm, that forms prior to the development of the stomatognathic apparatus.

Cap Stage (Casquete)

The third morphological stage of odontogenesis characterized by the development of the enamel organ, the dental papilla, and the dental sac (follicle).

Dental Enamel (Esmalte)

A highly mineralized, acellular, avascular, and non-innervated tissue of ectodermal origin composed of $96\%$ inorganic matrix (hydroxyapatite, phosphate, and carbonate), $3\%$ water, and $0.36-1\%$ organic matrix proteins (amelogenins, ameloblastins, enamelins, and amelotins).

Dentin (Dentina)

A specialized calcified dental tissue containing $70\%$ inorganic matter (mainly hydroxyapatite crystals), $12\%$ water, and $18\%$ organic matter (primarily collagen fibers), classified into primary, secondary, and tertiary (reparative) dentin.

Dental Pulp (Pulpa)

The vital, specialized soft connective tissue of the tooth composed of $75\%$ water and $25\%$ organic material that provides nourishment, dentinogenesis, and reparative tertiary dentin formation.

Periodontal Attachment Apparatus (Periodonto de Inserción)

The structural supporting unit of the tooth comprising the periodontal ligament, root cementum, and alveolar bone.

Root Cementum (Cemento)

A specialized avascular mineralized tissue composed of $46\%$ inorganic matter, $32\%$ water, and $22\%$ organic matrix, divided into primary (acellular) on the coronal two-thirds and secondary (cellular) on the apical third.

Domains of Dental Protection

The anatomical zones protecting the tooth crowns: the salivary domain covering the occlusal two-thirds and the gingival domain covering the cervical third.

Keyes' Triad (Extended)

The multifactorial etiology model for dental caries, consisting of the interaction between cariogenic microorganisms, fermentable carbohydrate substrate, host susceptibility, and time.

Eubiosis and Dysbiosis

Eubiosis refers to the normal ecological balance of the oral microbiota consistent with health, whereas dysbiosis represents an ecological imbalance that triggers pathological states.

Red Complex Periodontal Pathogens

The group of strict anaerobes heavily associated with severe periodontitis, consisting of Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola.

Gemination

A developmental anomaly where a single tooth germ attempts to divide, resulting clinically in a tooth with a bifid crown, one single root, and a common root canal.

Fusion

A developmental dental anomaly resulting from the union of two independently developing tooth germs joined together by dentin.

Concrescence

A form of dental twinning where two distinct, fully formed teeth become united along their root surfaces exclusively by cementum.

Turner's Tooth (Diente de Turner)

A pattern of focal enamel hypoplasia affecting a permanent tooth due to local apical inflammation or mechanical trauma from an overlying deciduous predecessor.

Amelogenesis Imperfecta

A group of hereditary conditions with ameloblast dysfunction presenting as hypoplastic (deficient thickness), hypomaturation (incomplete matrix protein removal, soft/chipped, 'snow-capped' incisal edge), or hypocalcified enamel.

Dentinogenesis Imperfecta

An inherited defect of dentin synthesis causing opalescent blue-gray or yellow-brown teeth, classified into Type I (associated with osteogenesis imperfecta and blue sclerae), Type II (isolated hereditary form), and Type III (Brandywine isolate).

Dentin Dysplasia

A genetic disturbance in dentin architecture classified into Type I (radicular, displaying short, blunted, or absent roots and crescent-shaped pulp chambers) and Type II (coronal, displaying flame-shaped pulp chambers and amber deciduous teeth).

Ectodermal Dysplasia

An X-linked hereditary disorder featuring hypohidrosis (lack of sweat glands with heat intolerance), hypotrichosis (sparse hair), and severe oligodontia or anodontia with conical, peg-shaped teeth.

Cleidocranial Dysplasia

A hereditary skeletal and dental condition characterized by an enlarged frontal cranium, hypoplastic or absent clavicles, delayed exfoliation of deciduous teeth, and multiple impacted supernumerary teeth.

Treacher Collins Syndrome

A mandibulofacial dysostosis characterized by downward-slanting palpebral fissures, hypoplastic zygomatic arches, micrognathia, malformed or absent ears, colobomas, and cleft lip/palate.

Bioavailability

The percentage and rate at which an active drug ingredient is absorbed from its pharmaceutical form and becomes available at the site of physiological action.

First-Pass Effect (Efecto de Primer Paso)

The rapid hepatic metabolism and enzymatic degradation of an orally or rectally absorbed drug that occurs before it enters the systemic arterial circulation.

Classification of Drug Administration Routes

The pathways by which pharmaceutical agents are delivered, categorized into enteral (oral with or without deglutition, rectal) and parenteral routes (injections: intravascular/extravascular; topical: cutaneous/mucosal).

ADME Profile

The pharmacokinetic pathway of an administered drug consisting of Absorption into the blood, Distribution to target tissues, Metabolism (biotransformation in the liver), and Excretion (elimination via urine or feces).

NOM-004-SSA3-2012

The Mexican Official Standard that establishes the mandatory criteria for the creation, integration, proper handling, utilization, and archiving of the patient clinical health record.

NOM-013-SSA2-2015

The Mexican Official Standard detailing the criteria, procedures, and health guidelines for the prevention, detection, diagnosis, and treatment of common oral diseases in Mexico.

Clinical Vital Signs Thresholds

Baseline physiological measurements in dental practice: heart rate of $60-100\,\text{bpm}$, respiratory rate of $12-20\,\text{breaths/min}$, body temperature of $37\,^\circ\text{C}$, and arterial oxygen saturation ($\text{SpO}_2$) of $95-100\%$.

Posterior Superior Alveolar (PSA) Nerve Block

A maxillary regional nerve block performed along the axis of the first molar, inserting the needle into the mucobuccal fold above the second molar without exceeding a penetration depth of $21-27\,\text{mm}$.

Greater Palatine (Anterior Palatine) Nerve Block

A palatal injection technique performed distal to the maxillary first molar, halfway between the gingival margin and median palatine raphe, using contralateral needle angulation to anesthetize the posterior hard palate.

Long Buccal Nerve Block

A mandibular block injected into the mucobuccal fold at a site located behind and below Stensen's duct papilla on the external oblique ridge, distal to the lower molars.

Palatal Sensory Innervation Zones

The territorial innervation of the palate where the anterior premaxillary mucosa is innervated by the nasopalatine nerve and the posterior hard palatal vault is innervated by the greater palatine nerve.

Emergency Anaphylaxis Management

The immediate intervention for acute severe type I hypersensitivity in the dental operatory: intramuscular administration of Epinephrine ($1:1000$) at $0.3-0.5\,\text{mg}$ in adults, airway maintenance, oxygen delivery, and placement in the Trendelenburg position.

Maximum Anesthetic Cartridge Formula

The dosing calculation: $\text{Max Dose (mg)} = \text{Weight (kg)} \times \text{Max (mg/kg)}$; $\text{mg per Cartridge} = \%\text{ Anesthetic} \times 10 \times \text{Volume (mL)}$; $\text{Cartridges} = \frac{\text{Max Dose (mg)}}{\text{mg per Cartridge}}$.

Mepivacaine 3% Dosing Parameters

A local anesthetic with a maximum recommended dose of $6.6\,\text{mg/kg}$ up to an absolute ceiling of $400\,\text{mg}$, providing $54\,\text{mg}$ of active mepivacaine per standard $1.8\,\text{mL}$ cartridge.

Dental Considerations in Arterial Hypertension

Clinical guidelines for patients with blood pressure over $140/90\,\text{mmHg}$, including stress reduction (diazepam $2\,\text{mg}$), afternoon appointments, monitoring for drug-induced gingival hyperplasia from calcium channel blockers (nifedipine), and avoiding vasoconstrictor overdose with non-selective beta-blockers.

Dental Considerations in Diabetes Mellitus

Management protocol requiring morning appointments, confirmation of normal meal intake and medication compliance to prevent intraoperative hypoglycemia, and having fast-acting oral carbohydrates readily available.