Dentitioion map

Mixed dentition typically occurs between the ages of 6 and 12 years. During this period, children have a combination of primary (milk) teeth and permanent teeth. This phase begins with the eruption of the first permanent molars and the shedding of the primary incisors and ends with the shedding of the last primary molar and canine, usually around age 12.

Certainly! Here's how you can structure the odontogram based on different age ranges typically associated with mixed dentition:

Age 6-7 Years¶

Upper Arch (Maxilla):
Permanent First Molars (16, 26)
Permanent Central Incisors (11, 21)
Primary Lateral Incisors (52, 62)
Primary Canines (53, 63)
Primary First Molars (54, 64)
Primary Second Molars (55, 65)
Lower Arch (Mandible):
Permanent First Molars (36, 46)
Permanent Central Incisors (31, 41)
Primary Lateral Incisors (72, 82)
Primary Canines (73, 83)
Primary First Molars (74, 84)
Primary Second Molars (75, 85)

Age 7-8 Years¶

Upper Arch (Maxilla):
Permanent First Molars (16, 26)
Permanent Central Incisors (11, 21)
Permanent Lateral Incisors (12, 22)
Primary Canines (53, 63)
Primary First Molars (54, 64)
Primary Second Molars (55, 65)
Lower Arch (Mandible):
Permanent First Molars (36, 46)
Permanent Central Incisors (31, 41)
Permanent Lateral Incisors (32, 42)
Primary Canines (73, 83)
Primary First Molars (74, 84)
Primary Second Molars (75, 85)

Age 9-10 Years¶

Upper Arch (Maxilla):
Permanent First Molars (16, 26)
Permanent Central Incisors (11, 21)
Permanent Lateral Incisors (12, 22)
Primary Canines (53, 63)
Permanent First Premolars (14, 24)
Primary Second Molars (55, 65)
Lower Arch (Mandible):
Permanent First Molars (36, 46)
Permanent Central Incisors (31, 41)
Permanent Lateral Incisors (32, 42)
Permanent Canines (33, 43)
Permanent First Premolars (34, 44)
Primary Second Molars (75, 85)

Age 11-12 Years¶

Upper Arch (Maxilla):
Permanent First Molars (16, 26)
Permanent Central Incisors (11, 21)
Permanent Lateral Incisors (12, 22)
Permanent Canines (13, 23)
Permanent First Premolars (14, 24)
Permanent Second Premolars (15, 25)
Lower Arch (Mandible):
Permanent First Molars (36, 46)
Permanent Central Incisors (31, 41)
Permanent Lateral Incisors (32, 42)
Permanent Canines (33, 43)
Permanent First Premolars (34, 44)
Permanent Second Premolars (35, 45)

You can adjust the odontogram to reflect these changes as children age. Here’s a simplified layout for each age group:

Age 6-7 Years¶

Maxillary Arch (Upper)
  55  54  53  52  11  21  62  63  64  65
  16  15  14  13  12     22  23  24  25  26

Mandibular Arch (Lower)
  75  74  73  72  31  41  82  83  84  85
  36  35  34  33  32     42  43  44  45  46

Age 7-8 Years¶

Maxillary Arch (Upper)
  55  54  53  12  11  21  22  63  64  65
  16  15  14  13     22  23  24  25  26

Mandibular Arch (Lower)
  75  74  73  32  31  41  42  83  84  85
  36  35  34  33     42  43  44  45  46

Age 9-10 Years¶

Maxillary Arch (Upper)
  55  54  13  12  11  21  22  23  24  65
  16  15  14  14  15  22  23  24  25  26

Mandibular Arch (Lower)
  75  74  33  32  31  41  42  43  44  85
  36  35  34  33  34     44  45  46

Age 11-12 Years¶

Maxillary Arch (Upper)
  55  54  13  12  11  21  22  23  24  25
  16  15  14  14  15  22  23  24  25  26

Mandibular Arch (Lower)
  75  74  33  32  31  41  42  43  44  45
  36  35  34  33  34     44  45  46

This way, you can create an accurate odontogram for each age range reflecting the typical mixed dentition stage.

No, the exact sequence and timing of tooth eruption and shedding can vary between individuals. The guidelines provided are typical ranges and common patterns, but there can be variations due to genetics, health, and other factors. Here are some key points to consider:

Variation in Timing: The age ranges for tooth eruption and shedding are averages. Some children may experience these changes earlier or later than others.
Sequence Differences: While the general sequence of tooth eruption is consistent, there can be individual differences. For instance, some children might get their lateral incisors before their central incisors.
Missing or Extra Teeth: Some children may have congenitally missing teeth (hypodontia) or extra teeth (supernumerary teeth), which can alter the typical pattern.
Dental Anomalies: Conditions like ectopic eruption, where a tooth erupts in an unusual position, or delayed eruption due to factors like crowding or trauma, can also affect the typical pattern.

Practical Approach for Mixed Dentition Odontogram¶

Flexible Design: Create the odontogram with flexibility to account for individual variations. Allow for customization based on the specific patient's dental development.
Use Ranges: Instead of fixed ages, use age ranges to represent when certain teeth typically erupt or are shed.
Updates and Adjustments: Regularly update the odontogram based on actual dental examinations and records, noting any deviations from the typical pattern.

Example of Flexible Odontogram¶

Upper Arch (Maxilla)¶

Permanent Central Incisors (11, 21): Typically erupt around ages 6-8
Permanent Lateral Incisors (12, 22): Typically erupt around ages 7-8
Primary Canines (53, 63): Typically shed around ages 11-12
Permanent First Molars (16, 26): Typically erupt around age 6
Primary First Molars (54, 64): Typically shed around ages 10-12
Primary Second Molars (55, 65): Typically shed around ages 10-12

Lower Arch (Mandible)¶

Permanent Central Incisors (31, 41): Typically erupt around ages 6-7
Permanent Lateral Incisors (32, 42): Typically erupt around ages 7-8
Primary Canines (73, 83): Typically shed around ages 9-12
Permanent First Molars (36, 46): Typically erupt around age 6
Primary First Molars (74, 84): Typically shed around ages 10-12
Primary Second Molars (75, 85): Typically shed around ages 10-12

By designing the odontogram with these considerations, you can create a more accurate and individualized representation of mixed dentition for each patient.